Basic concepts and differences between java concurrency and high concurrency

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concurrent

Having two or more threads at the same time, if the program runs on a single-core processor, multiple threads will alternately swap in and out of memory, these threads are simultaneously "present," each thread is in a certain state of execution, if running on a multi-core processor, each thread in the program will be assigned to a processor core, so it can run simultaneously.

high concurrency

High concurrency is one of the factors that must be considered in the design of the Internet distributed system framework, which usually refers to the design to ensure that the system can handle many requests simultaneously.

difference

Concurrency: Multiple threads operate on the same resources, ensuring thread safety and rational use of resources.

High concurrency: Services can handle many requests simultaneously, improving program performance.

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