Use file-based store instead of Postgres DB #25
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This is still in a DRAFT state, e.g. errors aren't handled properly atm. |
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Artifacts here. Current total memory usage at ~1,048,720,760 bytes, a ~18x decrease from existing levels. |
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- Adds a script that queries the GH repository and sets the state of metadata database to match. - Add NixOS service. - Add integration tests that check that the write part of the script writes correctly, and doesn't touch the database at all if an exception occurs.
- Add a memory usage NixOS test that provides an overview of metadata-server's memory usage under high load. It doesn't actually "test" anything, only provides statistics.
- Store metadata in the file system instead of a Postgres DB. PR #24 demonstrates that a large user of memory is the Postgres store, specifically building the query for large batch-style requrests. This could be investigated further, but a quick fix is simply to use a file-based store. There is no need to build a query, and files can be looked up quickly using their filename.
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demonstrates that a large user of memory is the Postgres store,
specifically building the query for large batch-style requrests. This
could be investigated further, but a quick fix is simply to use a
file-based store. There is no need to build a query, and files can be
looked up quickly using their filename.