29 lines
1.1 KiB
ReStructuredText
29 lines
1.1 KiB
ReStructuredText
=========
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Executors
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=========
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Executors control how a received message is scheduled for processing
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by a Server. This scheduling can be *synchronous* or *asynchronous*.
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A synchronous executor will process the message on the Server's
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thread. This means the Server can process only one message at a time.
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Other incoming messages will not be processed until the current
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message is done processing. For example, in the case of an RPCServer
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only one method call will be invoked at a time. A synchronous
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executor guarantees that messages complete processing in the order
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that they are received.
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An asynchronous executor will process received messages concurrently.
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The Server thread will not be blocked by message processing and can
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continue to service incoming messages. There are no ordering
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guarantees - message processing may complete in a different order than
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they were received. The executor may be configured to limit the
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maximum number of messages that are processed at once.
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Available Executors
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===================
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.. list-plugins:: oslo.messaging.executors
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:detailed:
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