18 lines
911 B
Plaintext
18 lines
911 B
Plaintext
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[[connection-pool]]
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=== Connection pool
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Connection pool is a container that holds the `Connection` instances, manages
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the selection process (via a `ConnectionSelector`) and dead connections.
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Initially connections are stored in the class as a list and – along with the
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connection options – get passed to the `ConnectionSelector` instance for future
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reference.
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Upon each request, the `Transport` asks for a `Connection` via the
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`get_connection` method. If the connection fails, it is marked as dead (via
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`mark_dead`) and put on a timeout. When the timeout is over the connection is
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resurrected and returned to the live pool. A connection that has been previously
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marked as dead and then succeeds is marked as live (its fail count is deleted).
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For reference information, refer to the
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https://elasticsearch-py.readthedocs.io/en/latest/connection.html#connection-pool[full {es} Python documentation].
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