perf: Implement request coalescing (single-flight) for user contributions fetching by MasterJi27 · Pull Request #5286 · JhaSourav07/commitpulse

MasterJi27 · 2026-06-11T17:49:59Z

Resolves #5237. Introduces promise coalescing using an activeContributionsPromises map to prevent duplicate fetches for simultaneous concurrent requests.

vercel · 2026-06-11T17:50:05Z

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Pull request overview

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This PR adds in-flight request coalescing to reduce duplicate concurrent GitHub contribution fetches for the same cache key.

Changes:

Introduces a module-level map to track active contribution fetch promises by cache key.
Wraps the uncached fetch function with a coalescing loader that reuses an existing in-flight promise.
Routes both cache-bypass and cached getOrSet fetches through the coalescing loader.

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 * DATA FETCHING
 * ========================================================================== */

+const activeContributionsPromises = new Map<string, Promise<ExtendedContributionData>>();


+  const coalescedLoad = () => {
+    let pending = activeContributionsPromises.get(key);
+    if (!pending) {
+      pending = load().finally(() => {
+        activeContributionsPromises.delete(key);
+      });
+      activeContributionsPromises.set(key, pending);
+    }
+    return pending;
+  };


 * DATA FETCHING
 * ========================================================================== */

+const activeContributionsPromises = new Map<string, Promise<ExtendedContributionData>>();


+      pending = load().finally(() => {
+        activeContributionsPromises.delete(key);
+      });


Aamod-Dev

Thanks for putting this together. The code looks clean and solves the issue effectively.

Looks solid. I'll go ahead and approve.

Aamod-Dev

Thanks for the contribution. I went through the changes and everything looks solid. The code is readable, well-structured, and aligns with the project conventions.

I'll go ahead and approve this PR. Thanks again for the contribution!

Aamod-Dev

Thanks for the contribution. I went through the changes and the overall approach looks good, but there are a few issues that should be addressed before this can be merged. Most of the concerns are related to correctness and maintainability.

There are merge conflicts with the base branch. Please resolve them to ensure existing functionality isn't broken.

Once these issues are addressed, I'll be happy to take another look. Thanks again for the contribution.

Aamod-Dev

Thanks for the contribution. It looks like there are merge conflicts with the base branch. Please rebase and resolve the conflicts so we can proceed with testing and merging. Thanks!

MasterJi27 · 2026-06-12T06:18:45Z

@Aamod007 all done form my side

MasterJi27 · 2026-06-12T07:31:47Z

Hi @Aamod007,

All CI checks are passing from my side. The only remaining issue is the Vercel deployment authorization, which appears to be a repository/configuration permission issue rather than a code issue.

Could you please review and approve the PR if everything looks good?

PR: #5286

Thanks.

Aamod-Dev · 2026-06-12T07:36:36Z

Review Update
Automatically adjusted labels to meet the strict 1:1:1:1:1 category requirement.

MasterJi27 · 2026-06-12T07:38:19Z

Hi @Aamod007,

I've rebased the branch and resolved all merge conflicts. All required CI checks are passing successfully.

Could you please re-review the PR and dismiss the previous change request if everything looks good?

Thanks.

…ions fetching

Aamod-Dev

Thanks for resolving the merge conflicts! Approving.

MasterJi27 · 2026-06-12T12:36:14Z

@Aamod007

Thank you for reviewing and approving my PRs.

Currently, I have the following approved PRs open:

#5364 – bug: Sanitize MongoDB operators from user-tracking payloads
#5343 – bug: Standardize timezone boundaries and evaluate active-hour grace periods for streaks
#5338 – bug: Align historical year ranges to user timezone offsets
#5286 – perf: Implement request coalescing (single-flight) for user contributions fetching
All of them have been reviewed and approved. The remaining blocker appears to be Vercel deployment authorization.

Could someone from the team please authorize the Vercel deployment and merge these PRs when convenient? It would help me continue working on additional assigned issues without having multiple approved PRs pending.

Thank you!

github-actions · 2026-06-12T15:22:37Z

🎉 Congratulations @MasterJi27! Your PR has been successfully merged. 🚀

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Copilot AI review requested due to automatic review settings June 11, 2026 17:50

Copilot AI reviewed Jun 11, 2026

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MasterJi27 force-pushed the perf-request-coalescing-5237 branch from 9780a93 to 8b25072 Compare June 11, 2026 18:03

Aamod-Dev approved these changes Jun 12, 2026

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JhaSourav07 added the gssoc:needs-rebase label Jun 12, 2026

Aamod-Dev approved these changes Jun 12, 2026

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Aamod-Dev requested changes Jun 12, 2026

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MasterJi27 force-pushed the perf-request-coalescing-5237 branch from b0da805 to 5b709bb Compare June 12, 2026 06:05

MasterJi27 requested a review from Aamod-Dev June 12, 2026 07:02

MasterJi27 mentioned this pull request Jun 12, 2026

perf: Implement Next.js Edge Timeout Racer with Stale Cache fallback #5288

Merged

Aamod-Dev removed type:performance Code changes that improve performance/speed type:devops CI/CD pipelines, workflows, dev scripts, and config labels Jun 12, 2026

perf: Implement request coalescing (single-flight) for user contribut…

67b8e53

…ions fetching

MasterJi27 force-pushed the perf-request-coalescing-5237 branch from 98a173f to 67b8e53 Compare June 12, 2026 08:03

Aamod-Dev approved these changes Jun 12, 2026

View reviewed changes

MasterJi27 mentioned this pull request Jun 12, 2026

bug: Sanitize MongoDB operators from user-tracking payloads #5364

Merged

MasterJi27 mentioned this pull request Jun 12, 2026

bug: Standardize timezone boundaries and evaluate active-hour grace periods for streaks #5343

Merged

Merge branch 'main' into perf-request-coalescing-5237

44da855

JhaSourav07 added the gssoc:approved PR has been reviewed and accepted for valid contribution points label Jun 12, 2026

JhaSourav07 merged commit d8bda20 into JhaSourav07:main Jun 12, 2026
4 of 5 checks passed

github-actions Bot added this to the GSSoC 2026 milestone Jun 12, 2026

JhaSourav07 added gssoc:approved PR has been reviewed and accepted for valid contribution points and removed gssoc:approved PR has been reviewed and accepted for valid contribution points labels Jun 17, 2026

github-actions Bot added type:performance Code changes that improve performance/speed and removed type:feature New features, additions, or enhancements labels Jun 18, 2026

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