docs/apache-airflow-providers-redis/logging/index.rst - airflow - Git at Google

  .. Licensed to the Apache Software Foundation (ASF) under one
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     to you under the Apache License, Version 2.0 (the
     "License"); you may not use this file except in compliance
     with the License.  You may obtain a copy of the License at

  ..   http://www.apache.org/licenses/LICENSE-2.0

  .. Unless required by applicable law or agreed to in writing,
     software distributed under the License is distributed on an
     "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     KIND, either express or implied.  See the License for the
     specific language governing permissions and limitations
     under the License.

 .. _write-logs-redis:

 Writing logs to Redis
 ---------------------

 Airflow can be configured to store log lines in Redis up to a configured maximum log lines, always keeping the most recent, up to a configured TTL. This deviates from other existing task handlers in that it accepts a connection ID.
 This allows it to be used in addition to other handlers, and so allows a graceful/reversible transition from one logging system to another. This is particularly useful in situations that use Redis as a message broker, where additional infrastructure isn't desired.
	.. Licensed to the Apache Software Foundation (ASF) under one
	or more contributor license agreements. See the NOTICE file
	distributed with this work for additional information
	regarding copyright ownership. The ASF licenses this file
	to you under the Apache License, Version 2.0 (the
	"License"); you may not use this file except in compliance
	with the License. You may obtain a copy of the License at

	.. http://www.apache.org/licenses/LICENSE-2.0

	.. Unless required by applicable law or agreed to in writing,
	software distributed under the License is distributed on an
	"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
	KIND, either express or implied. See the License for the
	specific language governing permissions and limitations
	under the License.

	.. _write-logs-redis:

	Writing logs to Redis
	---------------------

	Airflow can be configured to store log lines in Redis up to a configured maximum log lines, always keeping the most recent, up to a configured TTL. This deviates from other existing task handlers in that it accepts a connection ID.
	This allows it to be used in addition to other handlers, and so allows a graceful/reversible transition from one logging system to another. This is particularly useful in situations that use Redis as a message broker, where additional infrastructure isn't desired.