Answer
Controllers use resourceVersion with optimistic concurrency and caching.
Quick Answer
Optimistic concurrency with resourceVersion handles it: both controllers read the object, both see the same resourceVersion, both try to update — only the first write succeeds. The second gets a 409 Conflict. The losing controller re-reads the latest version and retries from the new state. No locking needed — just retry on conflict.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ