| 8.0.0 |
| ------------------ |
| |
| #### Project |
| * v3 protocol is added and implemented. All previous releases are incompatible with 8.x releases. |
| * Service, Instance, Endpoint register mechanism and inventory storage entities are removed. |
| * New GraphQL query protocol is provided, the legacy protocol is still supported(plan to remove at the end of this year). |
| * Support Prometheus network protocol. Metrics in Prometheus format could be transferred into SkyWalking. |
| * Python agent provided. |
| * All inventory caches have been removed. |
| * Apache ShardingSphere(4.1.0, 4.1.1) agent plugin provided. |
| |
| #### Java Agent |
| * Add MariaDB plugin. |
| * Vert.x plugin enhancement. More cases are covered. |
| * Support v3 extension header. |
| * Fix ElasticSearch 5.x plugin TransportClient error. |
| * Support Correlation protocol v1. |
| * Fix Finagle plugin bug, in processing Noop Span. |
| * Make `CommandService` daemon to avoid blocking target application shutting down gracefully. |
| * Refactor spring cloud gateway plugin and support tracing spring cloud gateway 2.2.x |
| |
| #### OAP-Backend |
| * Support meter system for Prometheus adoption. In future releases, we will add native meter APIs and MicroMeter(Sleuth) system. |
| * Support endpoint grouping. |
| * Add **SuperDataSet** annotation for storage entity. |
| * Add **superDatasetIndexShardsFactor** in the ElasticSearch storage, to provide more shards for @SuperDataSet annotated entites. Typically TraceSegment. |
| * Support alarm settings for relationship of service, instance, and endpoint level metrics. |
| * Support alarm settings for database(conjecture node in tracing scenario). |
| * Data Model could be added in the runtime, don't depend on the bootstrap sequence anymore. |
| * Reduce the memory cost, due to no inventory caches. |
| * No buffer files in tracing and service mesh cases. |
| * New ReadWriteSafe cache implementation. Simplify codes. |
| * Provide default way for metrics query, even the metrics doesn't exist. |
| * New GraphQL query protocol is provided. Support the metrics type query. |
| * Set up length rule of service, instance, and endpoint. |
| * Adjust the default jks for ElasticSearch to empty. |
| * Fix Apdex function integer overflow issue. |
| * Fix profile storage issue. |
| * Fix TTL issue. |
| * Fix H2 column type bug. |
| * Add JRE 8-14 test for the backend. |
| |
| #### UI |
| * UI dashboard is 100% configurable to adopt new metrics definited in the backend. |
| |
| #### Document |
| * Add v8 upgrade document. |
| * Make the coverage accurate including UT and e2e tests. |
| * Add miss doc about collecting parameters in the profiled traces. |
| |
| #### CVE |
| * Fix SQL Injection vulnerability in H2/MySQL implementation. |
| * Upgrade Nacos to avoid the FastJson CVE in high frequency. |
| * Upgrade jasckson-databind to 2.9.10. |
| |
| |
| All issues and pull requests are [here](https://github.com/apache/skywalking/milestone/45?closed=1) |
