Choosing Consistency Mode for SpiceDB Permission Checks
Guide to choosing between strong and eventual consistency for SpiceDB Permission Check calls, with a comparison table, trade‑off explanation, and a concrete gRPC example.
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Learn how to capture SpiceDB zedtokens from writes and use the at_least_as_fresh consistency level to guarantee that permission checks see the latest changes, avoiding stale reads after updates.
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Guide to decide when to use strong (FULL) or eventual (ZONKED) consistency for permission checks in SpiceDB, with trade‑offs and a validation example.
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consulStale read error during ZedToken consistency checks
SpiceDB utilizes ZedTokens to maintain consistency across distributed datastores, ensuring that permission checks are performed against a snapshot at least as fresh as the provided timestamp. This mechanism is critical for preventing the "New Enemy" problem where revoked permissions might otherwise be granted due to stale cached reads. When a client requests
Which consistency level should a SpiceDB client request after a relationship write?
SpiceDB's stable authzed.api.v1 API, introduced with the 1.0 release, lets each permission call carry a consistency requirement: minimize_latency , at_least_as_fresh with a ZedToken, or fully_consistent . The documentation explains the trade-offs, but it does not prescribe which requirement a client should persist for a read-after-write flow. The goal is to