Answer
Low-latency storage, optimized shard keys, small document writes, and region-aware replica placement minimize lag. Flow control tuning prevents primaries from overwhelming secondaries.
Quick Answer
Minimize replication lag: use faster hardware on secondaries (match primary specs), avoid large write operations that take long to apply on secondaries, pre-build indexes during off-peak, size oplog appropriately, use secondaries with same network proximity to primary as possible, monitor lag with rs.printSecondaryReplicationInfo(), and avoid writes that cause large document moves or multi-document operations without transactions.
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