Error handling
Error handling is the practice of detecting, representing, propagating, reporting, and responding to errors or failures during software operation.
Bootstrapping Microservices, Second Edition: With Docker, Kubernetes, GitHub Actions, and Terraform
An error-handling strategy is a systematic approach for detecting, responding to, and recovering from software errors.
- How it is used
- Plans responses and recovery to minimize harm when application errors occur.
- How deep it goes
- Explains anticipated-error responses and names two unexpected-error strategies, but does not detail the resume approach.
- Examples
- Uses runtime exceptions, faulty input, unexpected code use, failing dependencies, and Node.js uncaught-exception handlers.
- What you can do after
- Apply a strategy by planning retries, corrections, notifications, or process abort-and-restart responses.
Effective Conversational AI
Error handling is the management of recognition, interpretation, or execution failures so that a system can recover or guide the user toward an appropriate outcome.
- How it is used
- Guides voice bots through recognition misunderstandings and highlights how missing-information dialogue can frustrate users.
- How deep it goes
- Explains clarification and response simplification, then illustrates an LLM repeatedly questioning users who lack required details.
- Examples
- Uses speech misunderstandings and a claim-status chat where the user lacks a member ID or other required details.
- What you can do after
- Evaluate generative dialogue flows for missing-information loops and identify clarification or repetition as voice-bot recovery options.
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gRPC Microservices in Go
Error handling is the practice of detecting, representing, and responding to failures during software execution or communication.
- How it is used
- Guides client decisions when gRPC communication between microservices fails.
- How deep it goes
- Works through status codes and Go validation-detail parsing, without descending into gRPC protocol internals.
- Examples
- Uses an Order service Create request with invalid fields and a ResourceExhausted order-limit response.
- What you can do after
- Apply it via Go gRPC status conversion to inspect validation errors and choose a response to service failures.
Secrets of the JavaScript Ninja, Second Edition
The practice of detecting and responding to errors that occur during program execution.
- How it is used
- Frames error handling as a callback weakness and a reason to use promise chains for asynchronous sequences.
- How deep it goes
- Compares try-catch limits around callbacks with Node-style error arguments and catch handling across a promise chain.
- Examples
- Uses nested ninja-data callbacks and a chained sequence of mission requests.
- What you can do after
- Understand why asynchronous callback timing can bypass surrounding try-catch and how chained catch handles earlier promise failures.
Read how Secrets of the JavaScript Ninja, Second Edition explains error handling →
Starting Data Analytics with Generative AI and Python
A technique for detecting, responding to, and recovering from software or service failures.
- How it is used
- Stabilizes generative AI integrations when requests encounter errors or timeouts.
- How deep it goes
- Recommends retries for timeouts and rate limits but gives no implementation steps.
- Examples
- Names timeouts and rate-limit errors as cases for retry handling.
- What you can do after
- Apply retry mechanisms to handle request timeouts and rate-limit errors.
Read how Starting Data Analytics with Generative AI and Python explains error handling →
Related concepts
- LangGraphused by · LangGraph is a framework for building stateful, graph-structured workflows and applications, including those involving language models and agents.
- exceptionuses · An exception is a runtime signal or object representing an abnormal condition that interrupts ordinary program flow and may be handled or propagated.
- result typeused by · A type that represents an operation’s outcome as either a successful value or a failure value.
- try-catch statementuses · A try-catch statement is a control-flow construct that executes code under exception handling and transfers control to a matching handler when an exception is raised.
- error codeuses · An error code is a symbolic or numeric value that indicates or identifies an error or failure condition.
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