[python] add support for in-function concurrency#12850
Merged
Conversation
QuiiBz
requested review from
EndangeredMassa,
TooTallNate,
erikareads,
jeffsee55,
onsclom and
trek
as code owners
🦋 Changeset detectedLatest commit: 413fd54 The changes in this PR will be included in the next version bump. This PR includes changesets to release 2 packages
Not sure what this means? Click here to learn what changesets are. Click here if you're a maintainer who wants to add another changeset to this PR |
trek
approved these changes
Jan 13, 2025
Merged
EndangeredMassa
pushed a commit
that referenced
this pull request
Jan 13, 2025
This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## [email protected] ### Minor Changes - [cli] add compile cache to improve startup performance ([#12783](#12783)) ### Patch Changes - [cli] standardizes uses of confirm on confirm.ts ([#12834](#12834)) - [cli] sort imports in build/index.ts ([#12833](#12833)) - Updated dependencies \[[`5fea2c49103adf6f7153f04378bff6f571375b0e`](5fea2c4)]: - @vercel/[email protected] ## @vercel/[email protected] ### Minor Changes - Add support for in-function concurrency ([#12850](#12850)) Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
QuietCraftsmanship
pushed a commit
to QuietCraftsmanship/Vercel
that referenced
this pull request
Jul 6, 2025
This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## [email protected] ### Minor Changes - [cli] add compile cache to improve startup performance ([#12783](vercel/vercel#12783)) ### Patch Changes - [cli] standardizes uses of confirm on confirm.ts ([#12834](vercel/vercel#12834)) - [cli] sort imports in build/index.ts ([#12833](vercel/vercel#12833)) - Updated dependencies \[[`ac7961adcbbcf65b9cc6231b581e1f04a78bba2a`](vercel/vercel@ac7961a)]: - @vercel/[email protected] ## @vercel/[email protected] ### Minor Changes - Add support for in-function concurrency ([#12850](vercel/vercel#12850)) Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>
github-merge-queue bot
pushed a commit
that referenced
this pull request
Jul 22, 2025
Add support for the `/_vercel/ping` endpoint to replace the `handler-started` IPC message introduced in #12850. We first need to land this change (no-op), then allow our runtime to use this new endpoint instead of the `handler-started` message, then clean up the previous logic. We cannot test this change in CI yet (until we land the runtime change), but I've tested it manually.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Add support for in-function concurrency for Python functions, since they are now streaming-capable.
Anytime a request is received, we immediately send a
handler-startedIPC message to our runtime, which contains the current timestamp in milliseconds. This is implemented inside theBaseHandlerclass, which is used by all three handlers (BaseHTTPRequestHandler, ASGI, WSGI).Tested manually since we can't really have automated tests specifically for Python; we do have platform-level tests for in-function concurrency.