Sebastian Nagel created NUTCH-2896:
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Summary: Protocol-okhttp: make connection pool configurable
Key: NUTCH-2896
URL: https://issues.apache.org/jira/browse/NUTCH-2896
Project: Nutch
Issue Type: Improvement
Components: plugin, protocol
Affects Versions: 1.18
Reporter: Sebastian Nagel
Fix For: 1.19
[OkHttp's
ConnectionPool|https://square.github.io/okhttp/3.x/okhttp/okhttp3/ConnectionPool.html]
"holds up to 5 idle connections which will be evicted after 5 minutes of
inactivity." A pool of this size is suitable for site crawls but not for
larger crawls over many different sites / hosts.
Note: in the current version (4.9.1) the connection pool is implemented as a
[linked
queue|https://github.com/square/okhttp/blob/parent-4.9.1/okhttp/src/main/kotlin/okhttp3/internal/connection/RealConnectionPool.kt#L83].
In order to scale beyond pool sizes exceeding 1000 we need to use a set of
clients each with its own connection pool.
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