build(deps): update moka requirement from 0.11.2 to 0.12.7

[dependabot]

Updates the requirements on moka to permit the latest version.

Changelog

Sourced from moka's changelog.

Version 0.12.7

Changed

• Ensure a single call to run_pending_tasks to evict as many entries as possible from the cache (#417[gh-pull-0417]).

Version 0.12.6

Fixed

• Fixed a bug in future::Cache that pending run_pending_tasks calls may cause infinite busy loop in an internal schedule_write_op method (#412[gh-issue-0412]):
  • This bug was introduced in v0.12.0 when the background threads were removed from future::Cache.
  • This bug can occur when run_pending_task method is called by user code while cache is receiving a very high number of concurrent cache write operations. (e.g. insert, get_with, invalidate etc.)
  • When it occurs, the schedule_write_op method will be spinning in a busy loop forever, causing high CPU usage and all other async tasks to be starved.

Changed

• Upgraded async-lock crate used by future::Cache from v2.4 to the latest v3.3.

Version 0.12.5

Added

• Added support for a plain LRU (Least Recently Used) eviction policy (#390[gh-pull-0390]):
  • The LRU policy is enabled by calling the eviction_policy method of the cache builder with a policy obtained by EvictionPolicy::lru function.
  • The default eviction policy remains the TinyLFU (Tiny, Least Frequently Used) as it maintains better hit rate than LRU for most use cases. TinyLFU combines LRU eviction policy and popularity-based admission policy. A probabilistic data structure is used to estimate historical popularity of both hit and missed keys. (not only the keys currently in the cache.)
  • However, some use cases may prefer LRU policy over TinyLFU. An example is recency biased workload such as streaming data processing. LRU policy can be used for them to achieve better hit rate.
  • Note that we are planning to add an adaptive eviction/admission policy called Window-TinyLFU in the future. It will adjust the balance between recency and frequency based on the current workload.

... (truncated)

Commits

• c56d646 Merge pull request #417 from moka-rs/evict-more-entries-at-once
• ccb285b Tweak some source code comments
• dfbbe3f Make a single call to run_pending_tasks to evict as many entries as
• c6a4d4b Make a single call to run_pending_tasks to evict as many entries as
• 91c8497 Update the change log
• b59b938 Update the change log
• b9923f8 Bump the version to v0.12.7
• 364567e Make run_pending_tasks to evict more entries from the cache at once
• 3b9adc3 Make run_pending_tasks to evict more entries from the cache at once
• c7f67cd Make run_pending_tasks to evict more entries from the cache at once
• Additional commits viewable in compare view

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[dependabot]

Superseded by #670.