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JavaAdvanced#spring
JavaAdvanced#concurrency#jvm
What is the Java Memory Model (JMM)?
Defines how threads interact through memory: visibility, ordering, happens-before relationships. Provides guarantees for volatile, synchronized, and final fields.
Example
volatile boolean flag = false;
// Thread A: data = 42; flag = true;
// Thread B: if (flag) { read data; } // happens-before guarantees B sees data=42