Technical guide
Debug a Node.js application
Use targeted logs, Inspector breakpoints, or a VS Code launch configuration, and investigate production failures without exposing a debugger.
Explainer
Debug pytest tests with pdb and breakpoints
Set a breakpoint in a pytest test or enter pdb on failure, inspect variables, and understand capture behavior and PYTHONBREAKPOINT.
Explainer
Debug a Logstash pipeline with configuration checks and event output
Validate configuration, inspect rubydebug events, and use targeted runtime logs to separate parsing errors from input and output failures.
Technical guide
Decide when Node.js fits your application
Evaluate Node.js against the workload, libraries, team experience, and operational requirements, then test the design with representative traffic.
Explainer
Define custom exceptions in Python
Create application exceptions from Exception or a specific built-in type, preserve normal exception behavior, and expose structured error details.
Technical guide
Route different log sources to separate Elasticsearch indices
Label Filebeat inputs and route them through Logstash or directly to Elasticsearch, with explicit index, lifecycle, and template boundaries.
Technical guide
Delete all Git stashes at once
Clear the stash list, preserve entries you may need, and understand the difference between removing a stash reference and immediately deleting its objects.
Technical guide
Remove a commit from a Git branch
Choose reset, interactive rebase, or revert based on the commit position and whether other people depend on the history.
Explainer
Delete items from a Python dictionary
Use del, pop, or popitem to remove dictionary entries, choose missing-key behavior, and delete several keys without mutating an active iteration.
Explainer
Delete files and directories in Python
Choose unlink, rmdir, or shutil.rmtree for the correct target, handle missing paths and symlinks, and understand when deletion bypasses the trash.
Technical guide
Delete a Git branch locally and on the remote
Delete local and remote branch refs separately, prune stale tracking refs, and check merge status and worktrees before removing a branch.
Technical guide
Delete Git branches that have already been merged
List branches relative to an explicit integration target, review candidates before deletion, and distinguish ancestry checks from squash-merge completion.