[OAK-5138] NodeCache.getIfPresent() may result in writing to persistent cache

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.4.10, 1.5.14
• Fix Version/s: 1.4.11, 1.5.15, 1.6.0
• Component/s: cache, documentmk
• Assignee: Tomek Rękawek
• Reporter: Tomek Rękawek
• Created: 22/Nov/16 09:24
• Updated: 16/Feb/21 09:56
• Resolved: 23/Nov/16 09:27

Description

The NodeCache#getIfPresent() method checks whether the requested item exists either in the memCache or the persisted, multi-generational cache.

If the item exists in the multi-generational cache, but not in the most recent (write) generation, it's being moved (so the MultiGenerationMap.put() method is invoked).

As a result, the NodeCache#getIfPresent() method may result in a synchronous write, even in the asynchronous mode.

Issue Links

• Is contained by: OAK-5147 Backport asynchronous queue improvements to 1.2
• relates to: OAK-4882 Bottleneck in the asynchronous persistent cache