Redis-v9 version

What's Changed

• upgrade to go-redis v9 by @Stumble in #2

Full Changelog: v0.1.4...v0.2.0

Please use v0.1.x for go-redis v8

v0.1.4: Add SetMemCacheMaxTTLSeconds to allow longer memcache

feat: add SetMemCacheMaxTTLSeconds to allow longer memcache

v0.1.3

breaking: prometheus move appname to lable.

v0.1.2

fix: typo

v0.1.0: breaking, purge cache interface

refactoring: move metrics to metrics.go

v0.0.9

add logs for unmarshal errors

v0.0.8

fix: incorrect mem_unmarshal_failed metrics.

v0.0.7: Misc fixes and improvements.

1. fix redis latency metrics.
2. add more error labels.
3. fetch from DB when unmarshal failed.

v0.0.6

add hardcap for memory cache duration

Add otel tracer and use stricter memory cache update logic

v0.0.5

fix: stricter update memory cache logic