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Use database lock to prevent migrations from running concurrently #192

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slashdotdash opened this issue Mar 16, 2020 · 0 comments · Fixed by #204
Closed

Use database lock to prevent migrations from running concurrently #192

slashdotdash opened this issue Mar 16, 2020 · 0 comments · Fixed by #204
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slashdotdash commented Mar 16, 2020 •
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The mix event_store.migrate task used to migrate an EventStore database is idempotent but does not support being run concurrently.

A database lock could be used to ensure only one migration can run at a time, preventing issues with multi-node deployments where the migration is automatically run on startup as two or more nodes starting at the same time may attempt to migrate simultaneously.
@slashdotdash slashdotdash self-assigned this May 11, 2020
slashdotdash added a commit that referenced this issue May 11, 2020
@slashdotdash
Use database lock to prevent migrations from running concurrently
6e74b60 
Use Postgres advisory lock when migrating an event store database to ensure only a single migration can run at a time. This protects against running migrations concurrently by mistake.

Fixes #192.
@slashdotdash slashdotdash mentioned this issue May 11, 2020
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slashdotdash added a commit that referenced this issue May 11, 2020
@slashdotdash
Use database lock to prevent migrations from running concurrently
af16d87 
Use Postgres advisory lock when migrating an event store database to ensure only a single migration can run at a time. This protects against running migrations concurrently by mistake.

Fixes #192.
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Use database lock to prevent migrations from running concurrently commanded/eventstore
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