feat(demo): add BURST mode for a simultaneous enqueue of independent changes - #615
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kevinlnew
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Aug 19, 2026
…changes Add -burst (Makefile BURST=false) which, for independent changes, creates every change first and only then fires all the Land calls together, so the requests reach the queue in one burst instead of being enqueued as each is created. It works for every provider: burst runs each source through the same two phases, so fake creates instantly, github creates concurrently, git creates serially on its single work tree — and in all three the enqueues arrive together once creation is done. Burst does not make creation faster; with the git source it is still serialized on one work tree. It only separates creation from enqueuing so the publishes are not spread across the creation phase. The default is unchanged — each change lands the moment it exists, so the queue starts working during creation. A small lander seam lets the two-phase ordering be tested without a live gateway. # Conflicts: # service/submitqueue/demo/requests/BUILD.bazel # Please enter the commit message for your changes. Lines starting # with '#' will be kept; you may remove them yourself if you want to. # An empty message aborts the commit. # # interactive rebase in progress; onto 97dc5da # Last command done (1 command done): # pick babf53a # feat(demo): add BURST mode for a simultaneous enqueue of independent changes # No commands remaining. # You are currently rebasing branch 'preetam/demo-burst-mode' on '97dc5da9'. # # Changes to be committed: # modified: Makefile # modified: service/submitqueue/demo/requests/BUILD.bazel # modified: service/submitqueue/demo/requests/main.go # modified: service/submitqueue/demo/requests/main_test.go #
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Summary
Add -burst (Makefile BURST=false) which, for independent changes, creates every change first and only then fires all the Land calls together, so the requests reach the queue in one burst instead of being enqueued as each is created. It works for every provider: burst runs each source through the same two phases, so fake creates instantly, github creates concurrently, git creates serially on its single work tree — and in all three the enqueues arrive together once creation is done.
Burst does not make creation faster; with the git source it is still serialized on one work tree. It only separates creation from enqueuing so the publishes are not spread across the creation phase. The default is unchanged — each change lands the moment it exists, so the queue starts working during creation.
A small lander seam lets the two-phase ordering be tested without a live gateway.
Test Plan
✅ New unit test asserts nothing is enqueued until every change is created, provider-agnostically (a
landerseam + a recording source stand in for any provider); shape banner covered; existing//service/submitqueue/demo/requeststests green.Stack