Database
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Write Ahead Log
Quick Definition
Persistence mechanism writing changes to log before database
Full Definition
A persistence mechanism where changes are written to a log before being applied to the actual database.
Examples
crash recovery, transaction durability, replication
Related Terms
acid
transaction
durability
More Database Terms
Replication
Copying data between servers for redundancy
B-Tree Index
Self-balancing tree index for efficient sorted data operations
Query Optimization
Improving query performance through various techniques
CAP Theorem
Theorem on Consistency, Availability, Partition tolerance trade-offs
Denormalization
Intentionally adding redundancy to improve reads
SQL
Standard language for managing and querying databases