pluginGeek
LockingDraftRuby161Edit
Most caching libraries don't do locking, meaning that >1 process can be calculating a cached value at the same time. Since you presumably cache things because they cost CPU, database reads, or money, doesn't it make sense to lock while caching?https://github.com/seamusabshere/lock_and_cache
Use Postgres advisory lock to isolate code execution across machineshttps://github.com/heroku/pg_lock
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