[MGNLCACHE-212] refreshOnNoCacheRequests does not work with memcached backend Created: 10/Jun/19  Updated: 30/Mar/23

Status: Open
Project: Cache Modules
Component/s: memcached
Affects Version/s: 5.6.2
Fix Version/s: None

Type: Bug Priority: Neutral
Reporter: Neeraj Verma Assignee: Unassigned
Resolution: Unresolved Votes: 0
Labels: maintenance
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Template:
Acceptance criteria:
Empty
Task DoD:
[ ]* Doc/release notes changes? Comment present?
[ ]* Downstream builds green?
[ ]* Solution information and context easily available?
[ ]* Tests
[ ]* FixVersion filled and not yet released
[ ]  Architecture Decision Record (ADR)
Bug DoR:
[ ]* Steps to reproduce, expected, and actual results filled
[ ]* Affected version filled
Epic Link: Support

 Description   

Looking at the code, there is an option to refresh the cached entry by passing no-cache header. But it seems when used with memcached backend, this has no effect.

 

The underlying issue is, memcached library is calling .add() method, which will only add data if the key does not exist already. Instead it should use .set(), which supports updating the cached data if key already exists.

The method is called here: https://git.magnolia-cms.com/projects/MODULES/repos/cache/browse/magnolia-cache-memcached/src/main/java/info/magnolia/cache/memcached/spy/MemcachedWrapper.java#191


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