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taoensso / carmine

Redis client + message queue for Clojure
https://www.taoensso.com/carmine
Eclipse Public License 1.0
1.15k stars 130 forks source link

Mark v2.14.0 as breaking due to serialization changes? #216

Closed timmc-bcov closed 5 years ago

timmc-bcov commented 5 years ago

Carmine v2.14.0 upgraded Nippy to v2.12.0, which writes data that older versions cannot read. We ran into this when trying to upgrade Carmine from 2.6.2 to 2.19.1—since we have both old and new servers running simultaneously in a green/blue deploy type situation, and both sets are both reading from and writing to the cache, this breaks the old servers.

Our workaround is to version the cache keys and allow the new servers to warm up their "side" of the cache, but I think it would make sense to mark Carmine v2.14.0 as breaking forwards compatibility for older versions reading newer data.

ptaoussanis commented 5 years ago

Hi there, thanks for the report (and apologies for the trouble!). Will update the CHANGELOG in a moment 👍