Allow configuring the prepared statement cache #227
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status: ideal-for-contribution
An issue that a contributor can help us with
type: enhancement
A general enhancement
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mp911de
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status: ideal-for-contribution
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Sounds like a good enhancement. Do you want to submit a pull request? |
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Yep. Can do. |
vijayakumarsuraj
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Nov 11, 2021
- Make PreparedStatementCache (and implementations) public - Expose preparedStatementCache discovery option. Similar to what r2dbc-postgresql exposes: -1 = indefinite cache, 0 = no cache, n = lru cache with max size n. - Add LRUPreparedStatementCache and NoPreparedStatementCache implementations. [r2dbc#227] Signed-off-by: Suraj Vijayakumar <vijayakumar.suraj@gmail.com>
vijayakumarsuraj
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Nov 11, 2021
- Make PreparedStatementCache (and implementations) public - Expose preparedStatementCache discovery option. Similar to what r2dbc-postgresql exposes: -1 = indefinite cache, 0 = no cache, n = lru cache with max size n. - Add LRUPreparedStatementCache and NoPreparedStatementCache implementations. [r2dbc#227] Signed-off-by: Suraj Vijayakumar <vijayakumar.suraj@gmail.com>
vijayakumarsuraj
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Nov 11, 2021
- Make PreparedStatementCache public - Expose preparedStatementCache discovery option. Similar to what r2dbc-postgresql exposes: -1 = indefinite cache, 0 = no cache, n = lru cache with max size n. - Add LRUPreparedStatementCache and NoPreparedStatementCache implementations. [r2dbc#227] Signed-off-by: Suraj Vijayakumar <vijayakumar.suraj@gmail.com>
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I see errors Actually not really fast, I do it by clicking a button repeatingly. If I click once per second, everything is fine. If I click faster I get the error sometimes. Sometimes it also seems to stuck and I get the error for every attempt. In one of my applications I enabled the R2DBC pool configuration what solved the problems. In another of my application the enabling the pool didn't change the behavior at all. What do you think. Can this PR solve this problem? |
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Running into an error where the first time a query executes (using the cursored execution mode) it works, but running it again fails because my SQL Server didn't recognize the cached prepared statement handle.
In my use-case, disabling the statement cache would be sufficient - my queries don't run very often. But in general, perhaps having discovery options that can control this cache, or exposing
PreparedStatementCacheas a type that applications can provide their own implementation of, would be suitable?As a workaround I am reflectively updating the
ConnectionOptions.preparedStatementCachefield with my own "NoCache" implementation. But this is obviously not ideal.I'm using 0.8.5.RELEASE, and running on Java 11. SQL Server version is 2012.
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