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DM-26302: Avoid long-lived connections in Database #482

Merged
merged 3 commits into from
Mar 2, 2021
Merged

DM-26302: Avoid long-lived connections in Database #482

merged 3 commits into from
Mar 2, 2021

Commits on Mar 2, 2021

  1. Avoid long-lived connections in Database (DM-26302) 

    Database connections are now short-lived by default, they are created
either for the duration of a query or transaction. Additionally `session()`
context can be used for persistent connection that does not start
transaction, this is needed to manage lifetime of temporary tables.
Re-enabled connection pool use in database engines, this will need special
care in fork-based mutiprocessing.
    @andy-slac
    andy-slac committed Mar 2, 2021
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  2. Add registry method to reset connection pool.

    @andy-slac
    andy-slac committed Mar 2, 2021
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  3. Apply suggestions from code review 

    Co-authored-by: Jim Bosch <jbosch@astro.princeton.edu>
    @andy-slac @TallJimbo
    andy-slac and TallJimbo committed Mar 2, 2021
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