Meet the four isolation levels that determine how much transparency transactions have over each other.
Just like security clearance levels in spy movies, have four standard isolation levels that determine what each transaction can see:
š SERIALIZABLE - The Fort Knox level (strictest) š REPEATABLE READ - The consistent storyteller ā READ COMMITTED - The honest but flexible friend ā” READ UNCOMMITTED - The gossip who shares everything
Each level trades off between performance (how fast things run) and consistency (how accurate the data appears). The stricter the isolation, the slower the database, but the more predictable the results.
Key Insight: Choosing an isolation level is like choosing between speed and accuracy - you can't always have both at maximum levels!
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