Opened 9 years ago
Last modified 9 years ago
#25824 closed Uncategorized
Assertions in libmemcached when multiple django.core.cache.backends.memcached.PyLibMCCache backends used — at Version 1
| Reported by: | Michał Łowicki | Owned by: | nobody |
|---|---|---|---|
| Component: | Uncategorized | Version: | 1.8 |
| Severity: | Normal | Keywords: | |
| Cc: | Florian Apolloner | Triage Stage: | Unreviewed |
| Has patch: | no | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | no | UI/UX: | no |
Description (last modified by )
We're running Django 1.8.3 via uWSGI with threads enabled (uWSGI 2.0.11.5, configuration - https://gist.github.com/mlowicki/9a5042b5411537a51bbf).
When two backends using 'django.core.cache.backends.memcached.PyLibMCCache' are added and are used (each box is handling at least hundreds requests per second) then in uWSGI logs we're seeing lots of https://gist.github.com/mlowicki/a8b3dbd98f32dc40c4eb and application is misbehaving throwing 500s. When launched in second datacenter with much less threads then problem is much smaller but still exists (uWSGI configuration - https://gist.github.com/mlowicki/cbd18c689c3e2f838bf0)
Tried with pylibmc 1.4.1 and 1.5.0.
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