fix: add switch for RTC cache read #2841
Conversation
2 avoid unnecessary cache read if rtc is already cache missed
WalkthroughThe changes enhance caching capabilities in the Pika server through the introduction of a new parameter, Changes
Sequence Diagram(s)sequenceDiagram
participant User
participant PikaServer
participant RedisCache
User->>PikaServer: Execute Command
PikaServer->>RedisCache: Check Cache
alt Cache Hit
RedisCache-->>PikaServer: Return Cached Result
else Cache Miss
PikaServer->>PikaServer: Track cache_miss_in_rtc
PikaServer->>RedisCache: Fetch Data
RedisCache-->>PikaServer: Return Data
end
PikaServer-->>User: Send Result
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Files selected for processing (7)
- conf/pika.conf (1 hunks)
- include/pika_client_conn.h (3 hunks)
- include/pika_command.h (2 hunks)
- include/pika_conf.h (2 hunks)
- src/pika_client_conn.cc (8 hunks)
- src/pika_command.cc (3 hunks)
- src/pika_conf.cc (1 hunks)
Additional comments not posted (21)
include/pika_client_conn.h (4)
62-62: LGTM! Added member variablecache_miss_in_rtc_inBgTaskArg.The addition of
cache_miss_in_rtc_aligns with the objective to track cache misses in real-time caching scenarios.
82-82: LGTM! Updated method signature forBatchExecRedisCmd.The inclusion of
bool cache_miss_in_rtcin the method signature is necessary for tracking cache misses during batch execution.
140-140: LGTM! Updated method signature forDoCmd.The inclusion of
bool cache_miss_in_rtcin the method signature is necessary for tracking cache misses during command execution.
145-145: LGTM! Updated method signature forExecRedisCmd.The inclusion of
bool cache_miss_in_rtcin the method signature is necessary for tracking cache misses during Redis command execution.src/pika_client_conn.cc (6)
Line range hint
39-50:
LGTM! Updated method signature and logic forDoCmd.The method signature now includes
bool cache_miss_in_rtc, and the logic sets the cache miss state in the command object, ensuring accurate tracking of cache misses.
277-277: LGTM! Initializedcache_miss_in_rtc_inProcessRedisCmds.The initialization of
cache_miss_in_rtc_within theBgTaskArgstructure is necessary for tracking cache misses during command processing.
293-302: LGTM! Updated logic for cache miss handling inProcessRedisCmds.The logic now correctly updates the
cache_miss_in_rtc_flag if a cache miss occurs, ensuring accurate tracking and propagation of the cache miss state.
327-327: LGTM! Updated method signature forBatchExecRedisCmd.The inclusion of
bool cache_miss_in_rtcin the method signature is necessary for tracking cache misses during batch execution.
330-335: LGTM! Updated method signature and logic forExecRedisCmd.The method signature now includes
bool cache_miss_in_rtc, and the logic passes the cache miss state toDoCmd, ensuring accurate tracking and propagation of cache misses.
Line range hint
512-524:
LGTM! Updated method signature forExecRedisCmd.The inclusion of
bool cache_miss_in_rtcin the method signature is necessary for tracking cache misses during Redis command execution.include/pika_command.h (3)
578-578: LGTM! AddedIsCacheMissedInRtcmethod toCmdclass.The addition of
IsCacheMissedInRtcaligns with the objective to track cache misses in real-time caching scenarios.
579-579: LGTM! AddedSetCacheMissedInRtcmethod toCmdclass.The addition of
SetCacheMissedInRtcaligns with the objective to track cache misses in real-time caching scenarios.
609-609: LGTM! Addedcache_missed_in_rtc_member variable toCmdclass.The addition of
cache_missed_in_rtc_aligns with the objective to track cache misses in real-time caching scenarios.conf/pika.conf (2)
21-23: Comment update approved.The updated comment for
thread-numimproves clarity by specifying that it refers to the number of Net-worker threads in Pika.
26-29: New configuration parameter approved.The addition of the
rtc-cache-readparameter is well-documented and aligns with the PR's objective to enhance RTC cache functionality.src/pika_conf.cc (1)
544-548: New configuration option approved.The implementation correctly retrieves and processes the
rtc-cache-readconfiguration parameter. The logic is clear and aligns with the PR's objective.include/pika_conf.h (2)
471-471: LGTM!The accessor method
rtc_cache_read_enabled()is correctly implemented.
934-934: LGTM!The member variable
rtc_cache_read_enabled_is correctly declared and initialized.src/pika_command.cc (3)
831-831: Initialization ofcache_missed_in_rtc_looks good.The new boolean member variable
cache_missed_in_rtc_is correctly initialized tofalse.
891-891: Integration ofcache_missed_in_rtc_inDoCommandlooks good.The logic to handle
cache_missed_in_rtc_is correctly integrated and ensures that cache handling is bypassed if a cache miss has occurred.
1068-1069: New methodsIsCacheMissedInRtcandSetCacheMissedInRtclook good.The new methods provide necessary encapsulation for the
cache_missed_in_rtc_variable.Ensure that these methods are used correctly in the rest of the codebase.
* 1 add a switch for RTC feature 2 avoid unnecessary cache read if rtc is already cache missed * revised
* 1 add a switch for RTC feature 2 avoid unnecessary cache read if rtc is already cache missed * revised
* 1 add a switch for RTC feature 2 avoid unnecessary cache read if rtc is already cache missed * revised
1 为RTC功能添加开关
2 逻辑完善：如果Get/HGet在RTC路径上就cache missed了，后面流转到正常路径上时直接读DB，不再读cache
Summary by CodeRabbit
New Features
rtc-cache-readfor enhanced control over Redis cache reading.Bug Fixes
thread-numfor better user understanding.Enhancements