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Manage Lambda code in code objects / share code between identical versions#7019
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dominikschubert
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Didn't see any major issues 👍
Really awesome that we can now properly use versions "instantly" without skipping all the state verifications 😎 🚀
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Co-authored-by: Dominik Schubert <dominik.schubert91@gmail.com>
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Motivation
Currently, we store the code of a lambda on disk for every version. This has the following problems:
Changes
This PR fixes this behavior by encapsulating the unzipped code on disk with the code storage in S3. As long as the code is not updated, it will be shared (across versions of a function, never across functions).
This leads to faster preparation times and better API parity.
The publish version preparation is now nearly instantaneous, and therefore handled synchronously. The only exception is when publish is triggered by a state changing operation, like the publish=True parameter of
create_functionandupdate_function_code, in this case it will still be asynchronous, and both versions will wait for the unzipping (but its only unzipped once, due to a lock).Cleanups will be only done after ensuring no other version is taking up the code, on delete of the version or on function updates. Those complete cleanups will also delete the data in S3.
Cache cleanups of the code, namely cleaning up only the unzipped code on disk, will be done on service stop. In this case, the S3 data is not deleted, to enable persistence.