What is the purpose of the go.sum file in a Go module?

  • To store checksums of module files
  • To list required modules
  • To define module versions
  • To exclude specific modules
The go.sum file in a Go module serves the critical purpose of storing checksums (hashes) of the content of module files. It helps ensure the integrity and security of your project's dependencies. When you download modules or dependencies, Go verifies the checksums in the go.sum file to confirm that the downloaded files haven't been tampered with or corrupted. This is a crucial security feature in Go Modules.
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