Add sync pool and release helpers for Bind #3660
Conversation
WalkthroughA sync.Pool was introduced to manage reusable Bind struct instances, with new AcquireBind and ReleaseBind functions for allocation and cleanup. The Bind struct now has a release method to reset its fields. DefaultCtx now acquires/recycles Bind instances using these new mechanisms, and a new test validates the pooling and reset logic. Changes
Sequence Diagram(s)sequenceDiagram
participant Test as Test
participant Pool as bindPool
participant Bind as Bind
Test->>Pool: AcquireBind()
Pool-->>Test: Bind instance
Test->>Bind: Modify fields
Test->>Pool: ReleaseBind(Bind)
Pool->>Bind: Bind.release()
Test->>Pool: AcquireBind()
Pool-->>Test: (possibly same) Bind instance (reset)
Test->>Bind: Assert fields reset
Test->>Pool: ReleaseBind(Bind)
Estimated code review effort🎯 3 (Moderate) | ⏱️ ~15 minutes Poem
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🔇 Additional comments (8)
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Summary of Changes
Hello @ReneWerner87, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!
This pull request optimizes the allocation and deallocation of Bind objects by introducing a sync.Pool for their reuse. This change aims to reduce memory pressure and improve performance by minimizing garbage collection overhead associated with frequently created Bind instances, while also integrating this pooling mechanism seamlessly into the Fiber context lifecycle.
Highlights
- Performance Optimization: Implemented
sync.PoolforBindobjects to reduce memory allocations and garbage collection pressure, thereby improving application performance by reusing instances. - New Helper Functions: Introduced
AcquireBind()andReleaseBind()functions to manage the lifecycle ofBindobjects, allowing them to be efficiently retrieved from and returned to the object pool. - Context Integration: Integrated the
Bindobject pooling into theDefaultCtxlifecycle.Bindobjects are now acquired from the pool whenc.Bind()is called and released back to the pool when the context is reset viac.release(). - Test Coverage: Added a new test case (
Test_AcquireReleaseBind) to verify the correct behavior ofBindobject pooling, including the proper resetting of object state upon release and re-acquisition.
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Pull Request Overview
This PR adds object pooling for Bind instances to improve memory allocation efficiency by reusing Bind objects rather than creating new ones for each request.
Key changes:
- Introduces sync.Pool-based pooling with AcquireBind/ReleaseBind functions
- Integrates bind release into the context lifecycle cleanup
- Adds comprehensive test coverage for the pooling behavior
Reviewed Changes
Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| bind.go | Implements sync.Pool for Bind objects with acquire/release functions and state reset logic |
| ctx.go | Updates Bind() method to use pooled instances and adds bind cleanup to release() method |
| bind_test.go | Adds test to verify proper pooling behavior and state reset |
| b, ok := bindPool.Get().(*Bind) | ||
| if !ok { | ||
| panic(errors.New("failed to type-assert to *Bind")) | ||
| } |
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The type assertion failure should never occur with a properly configured sync.Pool. Consider using a direct type assertion without the ok check since the Pool.New function guarantees the correct type, or log the error instead of panicking to avoid crashing the application.
| } | |
| b := bindPool.Get().(*Bind) |
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| } | ||
| c.bind.ctx = c |
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The ctx field is set on every call to Bind() even when c.bind is already initialized. Consider moving this assignment inside the nil check to avoid unnecessary assignment when the bind object is already configured.
| c.bind.ctx = c | |
| c.bind.ctx = c | |
| } |
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Codecov Report❌ Patch coverage is
Additional details and impacted files@@ Coverage Diff @@
## main #3660 +/- ##
==========================================
+ Coverage 91.82% 91.84% +0.02%
==========================================
Files 113 113
Lines 11425 11443 +18
==========================================
+ Hits 10491 10510 +19
+ Misses 670 669 -1
Partials 264 264
Flags with carried forward coverage won't be shown. Click here to find out more. ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Code Review
This pull request introduces a sync.Pool for Bind objects to reduce allocations, which is a great performance optimization. The implementation is solid and follows the correct patterns for using sync.Pool. The integration with the Ctx lifecycle is also done correctly. I have a couple of suggestions for minor improvements to make the code more idiomatic and slightly more efficient. Overall, great work!
| b, ok := bindPool.Get().(*Bind) | ||
| if !ok { | ||
| panic(errors.New("failed to type-assert to *Bind")) | ||
| } |
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The type assertion from sync.Pool.Get() can be simplified. A single-value type assertion will panic if the type is incorrect, which is the same behavior as the current code. The panic message from the Go runtime is often more descriptive as it includes the actual type that was found, which can be more helpful for debugging.
| b, ok := bindPool.Get().(*Bind) | |
| if !ok { | |
| panic(errors.New("failed to type-assert to *Bind")) | |
| } | |
| b := bindPool.Get().(*Bind) |
| c.bind = AcquireBind() | ||
| } | ||
| c.bind.ctx = c |
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For efficiency, the c.bind.ctx assignment should only happen when a new Bind object is acquired. It can be moved inside the if block to avoid redundant assignments on subsequent calls to Bind() within the same request lifecycle.
if c.bind == nil {
c.bind = AcquireBind()
c.bind.ctx = c
}There was a problem hiding this comment.
⚠️ Performance Alert ⚠️
Possible performance regression was detected for benchmark.
Benchmark result of this commit is worse than the previous benchmark result exceeding threshold 1.50.
| Benchmark suite | Current: 2bdad9f | Previous: 7e2a748 | Ratio |
|---|---|---|---|
Benchmark_Ctx_Links - B/op |
1 B/op |
0 B/op |
+∞ |
BenchmarkAppendMsgitem-4_middleware_csrf - MB/s |
3200.61 MB/s |
1573.79 MB/s |
2.03 |
BenchmarkAppendMsgstorageManager |
0.6235 ns/op 1603.74 MB/s 0 B/op 0 allocs/op |
0.3117 ns/op 3208.43 MB/s 0 B/op 0 allocs/op |
2.00 |
BenchmarkAppendMsgstorageManager - ns/op |
0.6235 ns/op |
0.3117 ns/op |
2.00 |
BenchmarkAppendMsgdata |
0.6226 ns/op 1606.05 MB/s 0 B/op 0 allocs/op |
0.3112 ns/op 3213.69 MB/s 0 B/op 0 allocs/op |
2.00 |
BenchmarkAppendMsgdata - ns/op |
0.6226 ns/op |
0.3112 ns/op |
2.00 |
This comment was automatically generated by workflow using github-action-benchmark.
Summary
Testing
make testhttps://chatgpt.com/codex/tasks/task_e_6891a51dad34832688a090fd9490d4eb