IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
The Connection Pool
edit
IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.
The Connection Pool
editThe connection pool is an object inside the client that is responsible for maintaining the current list of nodes. Theoretically, nodes are either dead or alive.
However, in the real world, things are never so clear. Nodes are sometimes in a gray-zone of "probably dead but not confirmed", "timed-out but unclear why" or "recently dead but now alive".
The connection pool’s job is to manage this set of unruly connections and try to provide the best behavior to the client. There are several connection pool implementations that you can choose from:
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