How to Guarantee Unique Increments in a Global Counter Under High Concurrency?

Ensuring Uniqueness in Global Counters During High Concurrency

Your objective is to create a global counter that can be shared by multiple goroutines while ensuring that each increment is unique. While the channel-based counter you referenced may appear promising, it does have the potential for duplicates if multiple goroutines attempt to increment the counter simultaneously.

Addressing this concern, the ideal solution is to employ the atomic package. It provides atomic operations that guarantee the integrity of specific data types. For instance, you can create an atomic counter using *int32 as follows:

<code class="go">var globalCounter *int32 = new(int32)</code>

To atomically increment the counter, use the AddInt32 function:

<code class="go">currentCount := atomic.AddInt32(globalCounter, 1)</code>

This operation ensures that the counter is only incremented once, even if multiple goroutines attempt to do so concurrently.

In summary, using the atomic package eliminates the potential for duplicate increments in your global counter, ensuring its accuracy and reliability in highly concurrent systems.

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