Answer
A replica set is a group of MongoDB servers with redundancy and automatic failover, consisting of one primary and multiple secondaries.
Quick Answer
A replica set is a group of MongoDB servers that maintain the same dataset. One is the primary (handles writes), the rest are secondaries (replicate from primary, can serve reads). If the primary fails, secondaries elect a new primary automatically (failover). Provides high availability and data redundancy. Minimum 3 nodes recommended for proper elections.
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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