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| <li> |
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| <a href="/docs/2.9.0/distributed-computing/distributed-computing" |
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| class='' |
| >Distributed Computing API</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/distributed-computing/cluster-groups" |
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| class='' |
| >Cluster Groups</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/distributed-computing/executor-service" |
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| class='' |
| >Executor Service</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/distributed-computing/map-reduce" |
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| class='' |
| >MapReduce API</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/distributed-computing/load-balancing" |
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| class='' |
| >Load Balancing</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/distributed-computing/fault-tolerance" |
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| class='' |
| >Fault Tolerance</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/distributed-computing/job-scheduling" |
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| class='' |
| >Job Scheduling</a> |
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| </nav> |
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| <li> |
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| <a href="/docs/2.9.0/collocated-computations" class='' >Colocating Computations with Data</a> |
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| <button type='button' data-guide-url="" class='group-toggle collapsed '>Working with Events<img class="state-indicator" src="/assets/images/left-nav-arrow.svg"></button> |
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| <a href="/docs/2.9.0/events/listening-to-events" |
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| class='' |
| >Enabling and Listenting to Events</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/events/events" |
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| class='' |
| >Events</a> |
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| </nav> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/near-cache" class='active' >Near Caches</a> |
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| <a href="/docs/2.9.0/platform-cache" class='' >.NET Platform Cache</a> |
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| <a href="/docs/2.9.0/services/services" class='' >Services</a> |
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| >Queue and Set</a> |
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| <a href="/docs/2.9.0/data-structures/atomic-types" |
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| class='' |
| >Atomic Types</a> |
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| <li> |
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| <a href="/docs/2.9.0/data-structures/countdownlatch" |
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| class='' |
| >CountDownLatch</a> |
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| <li> |
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| <a href="/docs/2.9.0/data-structures/atomic-sequence" |
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| <a href="/docs/2.9.0/data-structures/semaphore" |
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| class='' |
| >Semaphore</a> |
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| >Machine Learning</a> |
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| <a href="/docs/2.9.0/machine-learning/partition-based-dataset" |
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| >Partition Based Dataset</a> |
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| <a href="/docs/2.9.0/machine-learning/updating-trained-models" |
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| >Updating Trained Models</a> |
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| <li><a href="/docs/2.9.0//machine-learning/binary-classification/introduction" class=''>Introduction</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/binary-classification/linear-svm" class=''>Linear SVM (Support Vector Machine)</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/binary-classification/decision-trees" class=''>Decision Trees</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/binary-classification/multilayer-perceptron" class=''>Multilayer Perceptron</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/binary-classification/logistic-regression" class=''>Logistic Regression</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/binary-classification/knn-classification" class=''>k-NN Classification</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/binary-classification/ann" class=''>ANN (Approximate Nearest Neighbor)</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/binary-classification/naive-bayes" class=''>Naive Bayes</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/regression/introduction" class=''>Introduction</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/regression/linear-regression" class=''>Linear Regression</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/regression/decision-trees-regression" class=''>Decision Trees Regression</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/regression/knn-regression" class=''>k-NN Regression</a></li> |
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| <li> |
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| <li><a href="/docs/2.9.0//machine-learning/clustering/introduction" class=''>Introduction</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/clustering/k-means-clustering" class=''>K-Means Clustering</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/clustering/gaussian-mixture" class=''>Gaussian mixture (GMM)</a></li> |
| |
| </nav> |
| |
| </li> |
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| <li> |
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| <a href="/docs/2.9.0/machine-learning/preprocessing" |
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| class='' |
| >Preprocessing</a> |
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| </li> |
| |
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| <li> |
| |
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| <button |
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| class='collapsed '>Model Selection<img class="state-indicator" src="/assets/images/left-nav-arrow.svg"></button> |
| <nav class="sub_pages collapsed"> |
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| <li><a href="/docs/2.9.0//machine-learning/model-selection/introduction" class=''>Introduction</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/model-selection/evaluator" class=''>Evaluator</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/model-selection/split-the-dataset-on-test-and-train-datasets" class=''>Split the dataset on test and train datasets</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/model-selection/hyper-parameter-tuning" class=''>Hyper-parameter tuning</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/model-selection/pipeline-api" class=''>Pipeline API</a></li> |
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| <li> |
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| <a href="/docs/2.9.0/machine-learning/multiclass-classification" |
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| class='' |
| >Multiclass Classification</a> |
| |
| </li> |
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| <li> |
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| <button |
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| <li><a href="/docs/2.9.0//machine-learning/ensemble-methods/introduction" class=''></a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/ensemble-methods/stacking" class=''>Stacking</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/ensemble-methods/baggin" class=''>Bagging</a></li> |
| |
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| <li><a href="/docs/2.9.0//machine-learning/ensemble-methods/random-forest" class=''>Random Forest</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/ensemble-methods/gradient-boosting" class=''>Gradient Boosting</a></li> |
| |
| </nav> |
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| <li> |
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| <a href="/docs/2.9.0/machine-learning/recommendation-systems" |
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| class='' |
| >Recommendation Systems</a> |
| |
| </li> |
| |
| |
| |
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| <li> |
| |
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| <button |
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| class='collapsed '>Importing Model<img class="state-indicator" src="/assets/images/left-nav-arrow.svg"></button> |
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| <li><a href="/docs/2.9.0//machine-learning/importing-model/introduction" class=''>Introduction</a></li> |
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| <li><a href="/docs/2.9.0//machine-learning/importing-model/model-import-from-gxboost" class=''>Import Model from XGBoost</a></li> |
| |
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| <li><a href="/docs/2.9.0//machine-learning/importing-model/model-import-from-apache-spark" class=''>Import Model from Apache Spark</a></li> |
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| </nav> |
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| </nav> |
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| <a href="/docs/2.9.0/monitoring-metrics/intro" |
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| class='' |
| >Introduction</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/monitoring-metrics/cluster-id" |
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| class='' |
| >Cluster ID and Tag</a> |
| |
| </li> |
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| <li><a href="/docs/2.9.0//monitoring-metrics/configuring-metrics" class=''>Configuring Metrics</a></li> |
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| <li><a href="/docs/2.9.0//monitoring-metrics/metrics" class=''>JMX Metrics</a></li> |
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| <a href="/docs/2.9.0/monitoring-metrics/system-views" |
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| <li><a href="/docs/2.9.0//security/tde" class=''>Introduction</a></li> |
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| <li><a href="/docs/2.9.0//security/master-key-rotation" class=''>Master key rotation</a></li> |
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| <button type='button' data-guide-url="" class='group-toggle collapsed '>Thin Clients<img class="state-indicator" src="/assets/images/left-nav-arrow.svg"></button> |
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| <a href="/docs/2.9.0/thin-clients/getting-started-with-thin-clients" |
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| class='' |
| >Thin Clients Overview</a> |
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| <li> |
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| <a href="/docs/2.9.0/thin-clients/java-thin-client" |
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| class='' |
| >Java Thin Client</a> |
| |
| </li> |
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| <li> |
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| <a href="/docs/2.9.0/thin-clients/dotnet-thin-client" |
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| class='' |
| >.NET Thin Client</a> |
| |
| </li> |
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| <li> |
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| <a href="/docs/2.9.0/thin-clients/cpp-thin-client" |
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| class='' |
| >C++ Thin Client</a> |
| |
| </li> |
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| <li> |
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| <a href="/docs/2.9.0/thin-clients/python-thin-client" |
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| class='' |
| >Python Thin Client</a> |
| |
| </li> |
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| <li> |
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| <a href="/docs/2.9.0/thin-clients/php-thin-client" |
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| class='' |
| >PHP Thin Client</a> |
| |
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| <a href="/docs/2.9.0/thin-clients/nodejs-thin-client" |
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| class='' |
| >Node.js Thin Client</a> |
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| <li><a href="/docs/2.9.0//binary-client-protocol/binary-client-protocol" class=''>Binary Client Protocol</a></li> |
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| |
| |
| <li><a href="/docs/2.9.0//binary-client-protocol/data-format" class=''>Data Format</a></li> |
| |
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| <li><a href="/docs/2.9.0//binary-client-protocol/key-value-queries" class=''>Key-Value Queries</a></li> |
| |
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| |
| <li><a href="/docs/2.9.0//binary-client-protocol/sql-and-scan-queries" class=''>SQL and Scan Queries</a></li> |
| |
| |
| |
| <li><a href="/docs/2.9.0//binary-client-protocol/binary-type-metadata" class=''>Binary Types Metadata</a></li> |
| |
| |
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| <li><a href="/docs/2.9.0//binary-client-protocol/cache-configuration" class=''>Cache Configuration</a></li> |
| |
| </nav> |
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| </nav> |
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| <li> |
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| <button type='button' data-guide-url="" class='group-toggle collapsed '>ODBC Driver<img class="state-indicator" src="/assets/images/left-nav-arrow.svg"></button> |
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| <li> |
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| <a href="/docs/2.9.0/SQL/ODBC/odbc-driver" |
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| class='' |
| >ODBC Driver</a> |
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| <li> |
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| <a href="/docs/2.9.0/SQL/ODBC/connection-string-dsn" |
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| class='' |
| >Connection String and DSN</a> |
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| <li> |
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| <a href="/docs/2.9.0/SQL/ODBC/querying-modifying-data" |
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| class='' |
| >Querying and Modifying Data</a> |
| |
| </li> |
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| <li> |
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| <a href="/docs/2.9.0/SQL/ODBC/specification" |
| |
| class='' |
| >Specification</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/SQL/ODBC/data-types" |
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| class='' |
| >Data Types</a> |
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| </li> |
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| <li> |
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| <a href="/docs/2.9.0/SQL/ODBC/error-codes" |
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| class='' |
| >Error Codes</a> |
| |
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| |
| </nav> |
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| <article data-swiftype-index='true'> |
| <a class='edit-link' href="https://github.com/apache/ignite/tree/IGNITE-7595/docs/_docs/near-cache.adoc" target="_blank">Edit</a> |
| |
| <h1>Near Caches</h1> |
| |
| <div id="preamble"> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>A near cache is a local cache that stores the most recently or most frequently accessed data on the local node. Let’s say your application launches a client node and regularly queries reference data, such as country codes. Because client nodes do not store data, these queries always fetch data from the remote nodes. You can configure a near cache to keep the country codes on the local node while your application is running.</p> |
| </div> |
| <div class="paragraph"> |
| <p>A near cache is configured for a specific regular cache and holds data for that cache only.</p> |
| </div> |
| <div class="paragraph"> |
| <p>Near caches store data in the on-heap memory. You can configure the maximum size of the cache and eviction policy for near cache entries.</p> |
| </div> |
| <div class="admonitionblock note"> |
| <table> |
| <tr> |
| <td class="icon"> |
| <div class="title">Note</div> |
| </td> |
| <td class="content"> |
| <div class="paragraph"> |
| <p>Near caches are fully transactional and get updated or invalidated automatically whenever the data changes on the server nodes.</p> |
| </div> |
| </td> |
| </tr> |
| </table> |
| </div> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="configuring-near-cache">Configuring Near Cache</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>You can configure a near cache for a particular cache in the cache configuration.</p> |
| </div> |
| <code-tabs><code-tab data-tab='XML'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="xml"><span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.configuration.CacheConfiguration"</span><span class="nt">></span> |
| <span class="nt"><property</span> <span class="na">name=</span><span class="s">"name"</span> <span class="na">value=</span><span class="s">"myCache"</span><span class="nt">/></span> |
| <span class="nt"><property</span> <span class="na">name=</span><span class="s">"nearConfiguration"</span><span class="nt">></span> |
| <span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.configuration.NearCacheConfiguration"</span><span class="nt">></span> |
| <span class="nt"><property</span> <span class="na">name=</span><span class="s">"nearEvictionPolicyFactory"</span><span class="nt">></span> |
| <span class="nt"><bean</span> <span class="na">class=</span><span class="s">"org.apache.ignite.cache.eviction.lru.LruEvictionPolicyFactory"</span><span class="nt">></span> |
| <span class="nt"><property</span> <span class="na">name=</span><span class="s">"maxSize"</span> <span class="na">value=</span><span class="s">"100000"</span><span class="nt">/></span> |
| <span class="nt"></bean></span> |
| <span class="nt"></property></span> |
| <span class="nt"></bean></span> |
| <span class="nt"></property></span> |
| <span class="nt"></bean></span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='Java'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="java"><span class="c1">// Create a near-cache configuration for "myCache".</span> |
| <span class="nc">NearCacheConfiguration</span><span class="o"><</span><span class="nc">Integer</span><span class="o">,</span> <span class="nc">Integer</span><span class="o">></span> <span class="n">nearCfg</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">NearCacheConfiguration</span><span class="o"><>();</span> |
| |
| <span class="c1">// Use LRU eviction policy to automatically evict entries</span> |
| <span class="c1">// from near-cache whenever it reaches 100_000 entries</span> |
| <span class="n">nearCfg</span><span class="o">.</span><span class="na">setNearEvictionPolicyFactory</span><span class="o">(</span><span class="k">new</span> <span class="nc">LruEvictionPolicyFactory</span><span class="o"><>(</span><span class="mi">100_000</span><span class="o">));</span> |
| |
| <span class="nc">CacheConfiguration</span><span class="o"><</span><span class="nc">Integer</span><span class="o">,</span> <span class="nc">Integer</span><span class="o">></span> <span class="n">cacheCfg</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">CacheConfiguration</span><span class="o"><</span><span class="nc">Integer</span><span class="o">,</span> <span class="nc">Integer</span><span class="o">>(</span><span class="s">"myCache"</span><span class="o">);</span> |
| |
| <span class="n">cacheCfg</span><span class="o">.</span><span class="na">setNearConfiguration</span><span class="o">(</span><span class="n">nearCfg</span><span class="o">);</span> |
| |
| <span class="c1">// Create a distributed cache on server nodes</span> |
| <span class="nc">IgniteCache</span><span class="o"><</span><span class="nc">Integer</span><span class="o">,</span> <span class="nc">Integer</span><span class="o">></span> <span class="n">cache</span> <span class="o">=</span> <span class="n">ignite</span><span class="o">.</span><span class="na">getOrCreateCache</span><span class="o">(</span><span class="n">cacheCfg</span><span class="o">);</span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='C#/.NET'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="csharp"><span class="kt">var</span> <span class="n">cacheCfg</span> <span class="p">=</span> <span class="k">new</span> <span class="n">CacheConfiguration</span> |
| <span class="p">{</span> |
| <span class="n">Name</span> <span class="p">=</span> <span class="s">"myCache"</span><span class="p">,</span> |
| <span class="n">NearConfiguration</span> <span class="p">=</span> <span class="k">new</span> <span class="n">NearCacheConfiguration</span> |
| <span class="p">{</span> |
| <span class="n">EvictionPolicy</span> <span class="p">=</span> <span class="k">new</span> <span class="n">LruEvictionPolicy</span> |
| <span class="p">{</span> |
| <span class="n">MaxSize</span> <span class="p">=</span> <span class="m">100</span><span class="n">_000</span> |
| <span class="p">}</span> |
| <span class="p">}</span> |
| <span class="p">};</span> |
| |
| <span class="kt">var</span> <span class="n">cache</span> <span class="p">=</span> <span class="n">ignite</span><span class="p">.</span><span class="n">GetOrCreateCache</span><span class="p"><</span><span class="kt">int</span><span class="p">,</span> <span class="kt">int</span><span class="p">>(</span><span class="n">cacheCfg</span><span class="p">);</span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='C++' data-unavailable='true'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code>This API is not presently available for C++. You can use XML configuration.</code></pre> |
| </div> |
| </div></code-tab></code-tabs> |
| <div class="paragraph"> |
| <p>Once configured in this way, the near cache is created on any node that requests data from the underlying cache, including both server nodes and client nodes. |
| When you get an instance of the cache, as shown in the following example, the data requests go through the near cache.</p> |
| </div> |
| <code-tabs><code-tab data-tab='Java'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="java"><span class="nc">IgniteCache</span><span class="o"><</span><span class="nc">Integer</span><span class="o">,</span> <span class="nc">Integer</span><span class="o">></span> <span class="n">cache</span> <span class="o">=</span> <span class="n">ignite</span><span class="o">.</span><span class="na">cache</span><span class="o">(</span><span class="s">"myCache"</span><span class="o">);</span> |
| |
| <span class="kt">int</span> <span class="n">value</span> <span class="o">=</span> <span class="n">cache</span><span class="o">.</span><span class="na">get</span><span class="o">(</span><span class="mi">1</span><span class="o">);</span></code></pre> |
| </div> |
| </div></code-tab></code-tabs> |
| <div class="paragraph"> |
| <p>Most configuration parameters available in the cache configuration that make sense for the near cache are inherited from the underlying cache configuration. |
| For example, if the underlying cache has an <a href="/docs/2.9.0/configuring-caches/expiry-policies">expiry policy</a> configured, entries in the near cache are expired based on the same policy.</p> |
| </div> |
| <div class="paragraph"> |
| <p>The parameters listed in the table below are not inherited from the underlying cache configuration.</p> |
| </div> |
| <table class="tableblock frame-all grid-all stripes-even stretch"> |
| <colgroup> |
| <col style="width: 20%;"> |
| <col style="width: 60%;"> |
| <col style="width: 20%;"> |
| </colgroup> |
| <thead> |
| <tr> |
| <th class="tableblock halign-left valign-top">Parameter</th> |
| <th class="tableblock halign-left valign-top">Description</th> |
| <th class="tableblock halign-left valign-top">Default Value</th> |
| </tr> |
| </thead> |
| <tbody> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">nearEvictionPolicy</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">The eviction policy for the near cache. See the <a href="/docs/2.9.0/memory-configuration/eviction-policies">Eviction policies</a> page for details.</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">none</p></td> |
| </tr> |
| <tr> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">nearStartSize</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">The initial capacity of the near cache (the number of entries it can hold).</p></td> |
| <td class="tableblock halign-left valign-top"><p class="tableblock">375,000</p></td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| </div> |
| <div class="sect1"> |
| <h2 id="creating-near-cache-dynamically-on-client-nodes">Creating Near Cache Dynamically On Client Nodes</h2> |
| <div class="sectionbody"> |
| <div class="paragraph"> |
| <p>When making request from a client node to a cache that hasn’t been configured to use a near cache, you can create a near cache for that cache dynamically. |
| This increases performance by storing "hot" data locally on the client side. |
| This cache is operable only on the node where it was created.</p> |
| </div> |
| <div class="paragraph"> |
| <p>To do this, create a near cache configuration and pass it as an argument to the method that gets the instance of the cache.</p> |
| </div> |
| <code-tabs><code-tab data-tab='Java'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="java"><span class="c1">// Create a near-cache configuration</span> |
| <span class="nc">NearCacheConfiguration</span><span class="o"><</span><span class="nc">Integer</span><span class="o">,</span> <span class="nc">String</span><span class="o">></span> <span class="n">nearCfg</span> <span class="o">=</span> <span class="k">new</span> <span class="nc">NearCacheConfiguration</span><span class="o"><>();</span> |
| |
| <span class="c1">// Use LRU eviction policy to automatically evict entries</span> |
| <span class="c1">// from near-cache, whenever it reaches 100_000 in size.</span> |
| <span class="n">nearCfg</span><span class="o">.</span><span class="na">setNearEvictionPolicyFactory</span><span class="o">(</span><span class="k">new</span> <span class="nc">LruEvictionPolicyFactory</span><span class="o"><>(</span><span class="mi">100_000</span><span class="o">));</span> |
| |
| <span class="c1">// get the cache named "myCache" and create a near cache for it</span> |
| <span class="nc">IgniteCache</span><span class="o"><</span><span class="nc">Integer</span><span class="o">,</span> <span class="nc">String</span><span class="o">></span> <span class="n">cache</span> <span class="o">=</span> <span class="n">ignite</span><span class="o">.</span><span class="na">getOrCreateNearCache</span><span class="o">(</span><span class="s">"myCache"</span><span class="o">,</span> <span class="n">nearCfg</span><span class="o">);</span> |
| |
| <span class="nc">String</span> <span class="n">value</span> <span class="o">=</span> <span class="n">cache</span><span class="o">.</span><span class="na">get</span><span class="o">(</span><span class="mi">1</span><span class="o">);</span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='C#/.NET'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code data-lang="csharp"><span class="kt">var</span> <span class="n">ignite</span> <span class="p">=</span> <span class="n">Ignition</span><span class="p">.</span><span class="nf">Start</span><span class="p">(</span><span class="k">new</span> <span class="n">IgniteConfiguration</span> |
| <span class="p">{</span> |
| <span class="n">DiscoverySpi</span> <span class="p">=</span> <span class="k">new</span> <span class="n">TcpDiscoverySpi</span> |
| <span class="p">{</span> |
| <span class="n">LocalPort</span> <span class="p">=</span> <span class="m">48500</span><span class="p">,</span> |
| <span class="n">LocalPortRange</span> <span class="p">=</span> <span class="m">20</span><span class="p">,</span> |
| <span class="n">IpFinder</span> <span class="p">=</span> <span class="k">new</span> <span class="n">TcpDiscoveryStaticIpFinder</span> |
| <span class="p">{</span> |
| <span class="n">Endpoints</span> <span class="p">=</span> <span class="k">new</span><span class="p">[]</span> |
| <span class="p">{</span> |
| <span class="s">"127.0.0.1:48500..48520"</span> |
| <span class="p">}</span> |
| <span class="p">}</span> |
| <span class="p">},</span> |
| <span class="n">CacheConfiguration</span> <span class="p">=</span> <span class="k">new</span><span class="p">[]</span> |
| <span class="p">{</span> |
| <span class="k">new</span> <span class="n">CacheConfiguration</span> <span class="p">{</span><span class="n">Name</span> <span class="p">=</span> <span class="s">"myCache"</span><span class="p">}</span> |
| <span class="p">}</span> |
| <span class="p">});</span> |
| <span class="kt">var</span> <span class="n">client</span> <span class="p">=</span> <span class="n">Ignition</span><span class="p">.</span><span class="nf">Start</span><span class="p">(</span><span class="k">new</span> <span class="n">IgniteConfiguration</span> |
| <span class="p">{</span> |
| <span class="n">IgniteInstanceName</span> <span class="p">=</span> <span class="s">"clientNode"</span><span class="p">,</span> |
| <span class="n">ClientMode</span> <span class="p">=</span> <span class="k">true</span><span class="p">,</span> |
| <span class="n">DiscoverySpi</span> <span class="p">=</span> <span class="k">new</span> <span class="n">TcpDiscoverySpi</span> |
| <span class="p">{</span> |
| <span class="n">LocalPort</span> <span class="p">=</span> <span class="m">48500</span><span class="p">,</span> |
| <span class="n">LocalPortRange</span> <span class="p">=</span> <span class="m">20</span><span class="p">,</span> |
| <span class="n">IpFinder</span> <span class="p">=</span> <span class="k">new</span> <span class="n">TcpDiscoveryStaticIpFinder</span> |
| <span class="p">{</span> |
| <span class="n">Endpoints</span> <span class="p">=</span> <span class="k">new</span><span class="p">[]</span> |
| <span class="p">{</span> |
| <span class="s">"127.0.0.1:48500..48520"</span> |
| <span class="p">}</span> |
| <span class="p">}</span> |
| <span class="p">}</span> |
| <span class="p">});</span> |
| <span class="c1">// Create a near-cache configuration</span> |
| <span class="kt">var</span> <span class="n">nearCfg</span> <span class="p">=</span> <span class="k">new</span> <span class="n">NearCacheConfiguration</span> |
| <span class="p">{</span> |
| <span class="c1">// Use LRU eviction policy to automatically evict entries</span> |
| <span class="c1">// from near-cache, whenever it reaches 100_000 in size.</span> |
| <span class="n">EvictionPolicy</span> <span class="p">=</span> <span class="k">new</span> <span class="nf">LruEvictionPolicy</span><span class="p">()</span> |
| <span class="p">{</span> |
| <span class="n">MaxSize</span> <span class="p">=</span> <span class="m">100</span><span class="n">_000</span> |
| <span class="p">}</span> |
| <span class="p">};</span> |
| |
| |
| <span class="c1">// get the cache named "myCache" and create a near cache for it</span> |
| <span class="kt">var</span> <span class="n">cache</span> <span class="p">=</span> <span class="n">client</span><span class="p">.</span><span class="n">GetOrCreateNearCache</span><span class="p"><</span><span class="kt">int</span><span class="p">,</span> <span class="kt">string</span><span class="p">>(</span><span class="s">"myCache"</span><span class="p">,</span> <span class="n">nearCfg</span><span class="p">);</span></code></pre> |
| </div> |
| </div></code-tab><code-tab data-tab='C++' data-unavailable='true'><div class="listingblock"> |
| <div class="content"> |
| <pre class="rouge highlight"><code>This API is not presently available for C++.</code></pre> |
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