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24 lines
1.1 KiB
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24 lines
1.1 KiB
Text
== About
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This is Nick's connection pool branch, wherein he attempts to rewrite Rails' connection handling code to
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be more thread-safe, and to add connection pooling features.
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== Goals
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- Preserve Rails' lazy connection acquisition and caching strategy behavior as it exists prior to this work.
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- Add ability to configure a connection pool to limit the number of connections made to a database in multiple-thread scenarios.
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- Threads will block for a configurable timeout if the pool is exhausted until a connection is available.
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- If none is available during the timeout period, an exception will be raised.
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- Add a checkout/checkin API to reserve and release a connection to/from the pool.
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- Add several different connection handling/pooling classes to serve different needs:
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- proper fixed-size connection pool
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- connection-per-thread with no maximum on the number of connections
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- single thread cached connection
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- pass-through to external connection pool (JRuby/JNDI data source connection pool)
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== TODO
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Remaining tasks:
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- Review and put the thing to real work.
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- Look at whether existing clear_* or verify_* methods can be deprecated or removed.
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