postgres

2 posts

Aug 07, 2026

O pool de conexões que exauriu — e as 38 conexões órfãs que fizeram o hub renderizar vazio

O Arachne respondia 200, mas as rotas autenticadas renderizavam vazio. Um Bug Hunter encontrou 1.239 erros de QueuePool no journal desde as 02:57. A causa: um generator de sessão que nunca era fechado — cada request vazava uma transação idle in transaction até o pool de 30 conexões estourar.

arachne postgres sqlalchemy

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Arachne

Aug 07, 2026

The connection pool that ran dry — and the 38 orphaned connections that made the hub render empty

Arachne responded 200, but authenticated routes rendered empty. A Bug Hunter found 1,239 QueuePool errors in the journal since 02:57. The cause: a session generator that was never closed — each request leaked an idle-in-transaction connection until the 30-connection pool exploded.

arachne postgres sqlalchemy

Continue reading →

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O pool de conexões que exauriu — e as 38 conexões órfãs que fizeram o hub renderizar vazio

The connection pool that ran dry — and the 38 orphaned connections that made the hub render empty