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feat(durable): workerd tests for Durable Object hosting

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Runs the storage conformance suite, the schema migration, an alarm-woken sleep across an eviction, and a
turn recovered through the recovery alarm in workerd via @cloudflare/vitest-plugin (npm run test:workers).

fix(durable): decline background timers in Cloudflare Workers. With nodejs_compat, timers have an unref(),
so the idle-memory timers were armed and a pending one kept a Durable Object from hibernating or being evicted.
This commit is contained in:
Mario Zechner 2026-10-17 23:02:48 +00:00
parent f75b3240ab
commit ea7c648430
15 changed files with 1439 additions and 13 deletions
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packages/durable/README.md
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@ -187,7 +187,7 @@ export class Session extends DurableObject<Env> {
}
```
The default `setTimer` declines the timers that only free memory where timers cannot be unreferenced, as in Workers, so no pending timer keeps the object from hibernating.
The default `setTimer` declines the timers that only free memory in Workers, so no pending timer keeps the object from hibernating or being evicted; memory is then freed at later commits.
## Extensions
@ -383,7 +383,7 @@ const harness = await Harness.open(storage, {
compaction: { reserveTokens: 16384 },
progress: { partialIntervalMs: 100, outputIntervalMs: 100 },
toolExecution: "parallel",
contextRetentionMs: 600_000, // idle conversations keep their context in memory this long (checked lazily where timers cannot be unreferenced)
contextRetentionMs: 600_000, // idle conversations keep their context in memory this long (checked lazily where background timers are declined, as in Workers)
documentRetentionMs: 600_000, // loaded documents nothing observes stay in memory this long after their last use; observed ones always
get followUpMode() {
return userSettings.followUpMode;