Advanced Go Concurrency: Exploring Higher-Level Primitives

2023/08/24

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The article introduces advanced Go concurrency techniques using the singleflight and errgroup packages from the extended standard library. The singleflight package allows for the suppression of duplicate function calls, making it useful for computationally expensive or slow operations. It can be used to share the result of a query to multiple concurrent requests. The errgroup package, on the other hand, is described as a sync.WaitGroup but with error propagation. It is useful for waiting for multiple operations to complete and determining if any of them failed. The article provides real-world examples and code snippets to demonstrate the usage of these packages. These higher-level concurrency primitives expand the capabilities of Go's basic concurrency features and are valuable tools for building concurrent applications.