Answer
Asynchronous replication commits without waiting for replicas, improving performance at the cost of durability.
Quick Answer
Asynchronous replication: primary commits without waiting for standby acknowledgment. Lower write latency but standby may lag behind. If primary fails, recently committed transactions may not be on standby (RPO > 0). Default replication mode in PostgreSQL. Acceptable for most apps where a small amount of data loss is tolerable in exchange for lower latency.
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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