Explainer
Fix 413 responses when uploading through Nginx
Set a deliberate request-body limit, check application and gateway limits, and test the complete upload rather than only the proxy configuration.
Technical guide
Resolve a Git merge conflict
Inspect unmerged paths, choose the intended combined result, stage it, and finish the correct merge or rebase operation.
Explainer
Inspect and control upstream response headers in Nginx
Log selected upstream headers, hide or replace them deliberately, and account for response status, processing phase, and header inheritance.
Technical guide
Run TypeScript files in Node.js
Choose native type stripping, tsx, ts-node, or a compile-first workflow, and keep type checking separate from execution.
Technical guide
List files changed between two Git revisions
Use name-only, name-status, or statistics output, distinguish endpoint and merge-base comparisons, and handle paths safely in scripts.
Explainer
Route Docker stdout and stderr separately with Fluentd
Identify the input format first, preserve the stream field, and retag records without mixing Docker driver events with Kubernetes CRI logs.
Technical guide
Configure trusted HTTPS certificates in Java and Python
Repair chain and hostname validation with an explicit application trust configuration instead of accepting every certificate.
Technical guide
Fix SSL certificate verification errors in urllib
Read the verification reason, select the intended trusted CA set explicitly, and distinguish Python trust paths from Requests-specific configuration.
Technical guide
Read a JSON file in Node.js
Use asynchronous file reads and JSON.parse, understand require caching, and handle malformed JSON, BOMs, and newline-delimited records.
Technical guide
View a file’s change history in Git
Follow a file through commits and detected renames, inspect patches, and distinguish line attribution from a complete history.
Technical guide
Choose a useful Git branch naming convention
Use consistent prefixes and readable descriptions while distinguishing team conventions from Git’s actual ref-name restrictions.
Explainer
What upstream means in Nginx
Define a backend group, choose a balancing policy, and understand failure handling, retries, DNS updates, and single-server exceptions.