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Panic-based error handling

Panic-based error handling is a simplified error management strategy where a program terminates immediately upon encountering an error, rather than attempting to recover or manage the failure gracefully^[400-devops-09-scripting-language-golang-introduction-part-2json-readme.md].

Mechanism

When a panic occurs, it typically signifies that something went unexpectedly wrong^[400-devops-09-scripting-language-golang-introduction-part-2json-readme.md]. In Go, this is often implemented using the built-in panic() function^[400-devops-09-scripting-language-golang-introduction-part-2json-readme.md]. It is standard practice to check if an error object is not nil immediately after a function call and to trigger a panic if the error indicates a failure^[400-devops-09-scripting-language-golang-introduction-part-2json-readme.md].

fileBytes, err := ioutil.ReadFile("./videos.json")

if err != nil {
    panic(err)
}

Use Cases

This approach is primarily used to "fail fast" on errors that should not occur during normal operation or that the developer is not prepared to handle gracefully^[400-devops-09-scripting-language-golang-introduction-part-2json-readme.md]. It is frequently used in introductory or rapid development contexts to ensure the program stops running as soon as it hits a critical issue, such as being unable to read a necessary configuration file or data source^[400-devops-09-scripting-language-golang-introduction-part-2json-readme.md].

  • [[Error handling]]
  • [[Graceful degradation]]
  • [[Go]]

Sources

^[400-devops-09-scripting-language-golang-introduction-part-2json-readme.md]