Answer
Semi-sync replication requires at least one replica to acknowledge before the primary commits, providing improved durability.
Quick Answer
Semi-synchronous replication: primary waits for at least one replica to acknowledge receiving the transaction to its relay log before returning success to the client. Not the same as fully synchronous (which waits for commit on replica). Reduces data loss window compared to async replication. Latency increases by one network round-trip. Falls back to async if no replica acknowledges within rpl_semi_sync_master_timeout.
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