fix(cache): clean up lib

[MasterPtato]

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[MasterPtato]

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• fix(cache): clean up lib #4457 👈 (View in Graphite)
• fix(config): allow configuring topo dcs via map, fix pg ssl mode config #4456
• fix(api): dont 500 on cross dc response #4449
• chore: update byte units on frontend #4444
• fix: runner alloc idx logic, api auth for actor get #4443
• main

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commit: 175706a

[claude]

Code Review

Good cleanup PR overall. Removing the unimplemented Redis driver and the unused rate-limiting code reduces surface area, and the double-serialization layer simplification in fetch_all_convert is a clear improvement.

Issues

Unnecessary clone in delete (driver.rs:211)

get and set were both updated to use self.cache directly, but delete was missed - it still does let cache = self.cache.clone(). Since moka::future::Cache is Arc-backed the clone is cheap, but it is inconsistent with the refactoring done to the other two methods.

Redundant RawCacheKey conversions in purge (req_config.rs:225-255)

process_key now returns RawCacheKey instead of String, but purge still has two conversion steps that are now no-ops via the blanket From for T impl:

• .map(|k| RawCacheKey::from(k.clone())) is equivalent to .cloned()
• let raw_keys = cache_keys.into_iter().map(RawCacheKey::from).collect() is also identity

Both can be simplified or the two intermediate vectors collapsed into one.

Silent 10x capacity increase (inner.rs)

Default capacity changed from 1000 to 10000 with no comment. This could meaningfully increase memory usage in constrained environments. Worth a brief comment explaining the rationale.

Nits

• The #[non_exhaustive] attribute on Driver is now less meaningful with only one variant. Still valid forward-compatibility intent, but worth confirming it is deliberate.
• Renaming fetch_all / fetch_one to fetch_all_json / fetch_one_json is a good clarification that these are JSON-specific.