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b9ad795dce
add-ec-vacuum
add-foundation-db
add_fasthttp_client
add_remote_storage
adding-message-queue-integration-tests
avoid_releasing_temp_file_on_write
changing-to-zap
collect-public-metrics
create-table-snapshot-api-design
data_query_pushdown
dependabot/maven/other/java/client/com.google.protobuf-protobuf-java-3.25.5
dependabot/maven/other/java/examples/org.apache.hadoop-hadoop-common-3.4.0
detect-and-plan-ec-tasks
do-not-retry-if-error-is-NotFound
fasthttp
filer1_maintenance_branch
fix-GetObjectLockConfigurationHandler
fix-versioning-listing-only
ftp
gh-pages
improve-fuse-mount
improve-fuse-mount2
logrus
master
message_send
mount2
mq-subscribe
mq2
original_weed_mount
random_access_file
refactor-needle-read-operations
refactor-volume-write
remote_overlay
revert-5134-patch-1
revert-5819-patch-1
revert-6434-bugfix-missing-s3-audit
s3-select
sub
tcp_read
test-reverting-lock-table
test_udp
testing
testing-sdx-generation
tikv
track-mount-e2e
volume_buffered_writes
worker-execute-ec-tasks
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dev
helm-3.65.1
v0.69
v0.70beta
v3.33
${ noResults }
chrislu
b9ad795dce
Merged two separate caches into one unified cache to simplify code and
reduce memory usage. The unified cache stores both topic existence and
configuration in a single structure.
Design:
- Single topicCacheEntry with optional *ConfigureTopicResponse
- If conf != nil: topic exists with full configuration
- If conf == nil: topic doesn't exist (negative cache)
- Same 30-second TTL for both existence and config caching
Changes to broker_server.go:
- Removed topicExistsCacheEntry struct
- Removed topicConfCacheEntry struct
- Added unified topicCacheEntry struct (conf can be nil)
- Removed topicExistsCache, topicExistsCacheMu, topicExistsCacheTTL
- Removed topicConfCache, topicConfCacheMu, topicConfCacheTTL
- Added unified topicCache, topicCacheMu, topicCacheTTL
- Updated NewMessageBroker() to initialize single cache
Changes to broker_topic_conf_read_write.go:
- Modified GetOrGenerateLocalPartition() to use unified cache
- Added negative caching (conf=nil) when topic not found
- Renamed invalidateTopicConfCache() to invalidateTopicCache()
- Single cache lookup instead of two separate checks
Changes to broker_grpc_lookup.go:
- Modified TopicExists() to use unified cache
- Check: exists = (entry.conf != nil)
- Only cache negative results (conf=nil) in TopicExists
- Positive results cached by GetOrGenerateLocalPartition
- Removed old invalidateTopicExistsCache() function
Changes to broker_grpc_configure.go:
- Updated invalidateTopicExistsCache() calls to invalidateTopicCache()
- Two call sites updated
Benefits:
1. Code Simplification: One cache instead of two
2. Memory Reduction: Single map, single mutex, single TTL
3. Consistency: No risk of cache desync between existence and config
4. Less Lock Contention: One lock instead of two
5. Easier Maintenance: Single invalidation function
6. Same Performance: Still eliminates 60% CPU overhead
Cache Behavior:
- TopicExists: Lightweight check, only caches negative (conf=nil)
- GetOrGenerateLocalPartition: Full config read, caches positive (conf != nil)
- Both share same 30s TTL
- Both use same invalidation on topic create/update/delete
Testing:
- ✅ Compiles successfully
- Ready for integration testing
This refactor maintains all performance benefits while simplifying
the codebase and reducing memory footprint.
|
1 week ago | |
|---|---|---|
| .. | ||
| seaweedfs | Helm: allow specifying extraArgs for s3 (#7294) | 2 weeks ago |
| artifacthub-repo.yml | Update artifacthub-repo-stable.yml (#4330) | 3 years ago |