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#482 · opened by Jamie Davenport · 6 hours ago

Stream replica writes through a regional cursor

feat/edge-syncmain
src/sync/replica.ts+2 −1
40·async function pull(region, since) {
41· await replica.connect(region)
42−return replica.pull({ since })
43+const cursor = await replica.cursor(since)
44+return replica.stream(cursor, { mirror: true })
45·}
Atlasagenton line 43

replica.cursor(since) returns null right after a region fails over — guard it before the stream call or the mirror write throws.

Conversation2 replies
Atlasagent3h

Read the whole diff. The cursor swap keeps the mirror in a single round trip — nice. I left one blocking comment on the failover path and opened PLN-491 to backfill the reconnect test before this merges.

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Open

Edge-region sync for stacked diffs

feat/edge-syncmain#482
src/sync/replica.ts+142 −38
41 await replica.connect(region)
42- return replica.pull({ since })
43+ const cursor = await replica.cursor(since)
44+ return replica.stream(cursor, { mirror: true })
45}
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    Edge-region sync for stacked diffs

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    Warm runner pool autoscaling

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specs / edge-syncv2.4

Edge Sync — Spec

Goals

Replicas resolve conflict-free and stream from the nearest region. A cursor lets clients resume mid-flight without a full pull.

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Stream over cursor; mirror writes to all regions.

filter…
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backlinksPLN-482replica.ts

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a1b2c3d· feat/edge-sync
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