Explainer
Enable PostgreSQL query logging
Configure PostgreSQL SQL logging, distinguish reloadable settings from collector startup settings, and choose a narrower slow-query capture when appropriate.
Explainer
Rotate log files in Ruby
Configure size or time-based Logger rotation, understand retention limits, and test collection across file changes.
Explainer
Log to a file and the console in Python
Attach separate handlers for file and console output, set their thresholds independently, and prevent duplicate records and uncontrolled file growth.
Explainer
Write Ruby logs to a file and the console
Configure two Logger destinations, add a small message fan-out wrapper, or use Rails BroadcastLogger without duplicating ingestion.
Explainer
Send Python logs to standard output
Route Python logging to stdout with basicConfig or StreamHandler, and understand configuration ownership and container log collection.
Explainer
Log unhandled exceptions in C#
Use last-chance exception hooks alongside awaited task handling and ASP.NET Core exception middleware, without assuming crash-time logging is guaranteed.
Explainer
Log uncaught exceptions in Java
Register a default or per-thread exception handler, and distinguish thread termination from exceptions stored in executor futures.
Explainer
Log uncaught exceptions in Python
Use sys.excepthook for top-level failures, threading.excepthook for worker threads, and explicit handling for functions and asynchronous tasks.
Technical guide
Stop tracking a file that is already in .gitignore
Remove a tracked file from the index while retaining your copy, commit the ignore rule, and avoid accidentally staging unrelated work during bulk cleanup.
Explainer
Ignore executable-bit changes in Git
Use core.fileMode to suppress unreliable working-tree executable-bit changes, then set intentional script modes explicitly in the index.
Explainer
Stop systemd from restarting rsyslog
Inspect rsyslog service restart policies and activation paths, then choose a temporary stop, a drop-in override, or a service mask.
Explainer
Manage Prometheus counters correctly
Name cumulative metrics, handle resets in queries, control label cardinality, and plan historical retention.