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275 questions, 991 terms and 600 topics in 30 areas.
10 results for “OTA Updates”
A/B Partition Update
Writing firmware to an inactive partition and switching on next boot, so a failed update falls back to the previous image rather than bricking the device.
Changelog Stream
A stream whose records are keyed updates, so replaying it from the beginning reconstructs a table — the same information in the other of its two forms.
Convergence Without Coordination
The property that replicas applying the same set of updates in any order reach the same state, which is what removes the need for a central arbiter.
Eventual Consistency
A guarantee that replicas will converge to the same value if updates stop, with no bound on how long reads may be stale.
Forced Upgrade
Blocking an installed client version from operating until it updates, which is the only lever available and is disruptive enough to need a policy.
Read-Your-Writes Consistency
A session guarantee that a client always sees its own updates, even when reads are served from replicas that may lag.
An OTA firmware update has bricked 3% of a 50,000-device fleet. What do you do, and what should have prevented it?
Halt immediately, then determine the correlation Stop the rollout before anything else. Then find what the 1,500 have in common: hardware revision, previous fir
A dashboard product uses WebSockets for live updates. It works at 5,000 concurrent users and falls apart at 50,000. Diagnose the architectural issues.
Why it breaks at scale and not before Connections are stateful and pinned. Each WebSocket lives on one server for its duration, so the usual stateless scaling a