Custom Checkpoint Request Rollout Docs - #614
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Existing users of custom write checkpoints will most likely need to upgrade to custom checkpoint requests in the future. During an upgrade, developers will probably need to simultaneously cater for older applications which still use legacy custom write checkpoints and newer applications which use checkpoint requests.
On the PowerSync service side, the behaviour for the two share quite a lot of implementation. The main difference is that the newer checkpoint requests are temporary - they are deleted after a period. This is fine since those requests are retried by the client. Legacy write checkpoints are not temporary, they should not be deleted.
The PowerSync service needs some manner to distinguish between the two checkpoint events. This adds docs for that and some general recommendations for rolling out an upgrade to checkpoint_requests.
For context of limitations and implementations, see:
powersyncPR 401AI usage: These docs were generated with the help of Codex 5.6.