Answer
WiredTiger provides document-level locking, compression, checkpoints, and high concurrency performance.
Quick Answer
WiredTiger is the default MongoDB storage engine since MongoDB 3.2. It provides: document-level concurrency control (multiple writers don't block each other), compression (snappy by default - saves 50-80% disk space), checkpointing (consistent snapshots every 60 seconds), and write-ahead logging for crash recovery. Replaced the old MMAPv1 engine which used collection-level locking.
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