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Daniel Saputra
Daniel Saputra

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Bite-Sized Tips to Avoid Deadlocks in Your Go Programs

This article was originally published on my blog.

What Are Deadlocks?
Deadlocks occur when goroutines get stuck waiting for each other. This stops your program and can be difficult to debug. Avoiding deadlocks is key to writing efficient Go code.

Tip 1: Close Channels
Always close channels when their purpose is complete. Because It signals receivers that no more data is coming.
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Tip 2: Use select with Default
Use a select block with a default case for non-blocking operations. This keeps your code responsive even when a channel isn’t ready.
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Tip 3: Use Buffered Channels
Buffered channels can store messages temporarily, avoiding unnecessary blocking.
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Putting It All Together
Combine these techniques for robust, deadlock-free Go programs: Close channels when done Use select with default for nonblocking sends Leverage buffered channels for smooth communication.

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