[CAMEL-14281] Support sync reads/read locking in JCachePolicyProcessor

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Abandoned
• Affects Version/s: 3.0.0
• Fix Version/s: 3.x
• Component/s: camel-jcache
• Estimated Complexity: Unknown
• Assignee: Unassigned
• Reporter: Jens Kleine-Herzbruch
• Created: 10/Dec/19 08:35
• Updated: 02/Sep/22 11:45
• Resolved: 02/Sep/22 11:45

Description

Currently, if two requests for the same cache key come in simultaneously, both requests will execute the route decorated with the cache policy. If this route includes expensive calculations/integrations this may be undesirable. Instead, only the first request should kick off the real route, and the second should block on the cache read until the result of the first route has entered the cache.

 

Spring, for example, supports this with the "sync" parameter on @Cacheable.