What is alert fatigue?
Alert fatigue is the state a team reaches when so few of its alerts are worth acting on that engineers stop reading them, including the ones that matter.
What is crash reporting?
Crash reporting is the capture of an application’s state at the moment its process terminated, written to disk by a handler installed before the crash and uploaded on the next launch.
What is deployment tracking?
Deployment tracking is the practice of notifying your error monitoring tool every time you release code, so each error can be attributed to the release that introduced it.
What is error grouping?
Error grouping is the process an error monitoring tool uses to collapse many individual error events into a single item that represents one underlying bug.
What is error rate?
Error rate is the number of errors an application produces per unit of time or per unit of traffic, usually expressed as errors per hour or as the percentage of requests that failed.
What is MTTR?
MTTR, mean time to resolution, is the average interval between an error first appearing in production and that error being marked fixed, measured across a set of items over a window of time.
What is a regression?
A regression is a bug that was fixed and has started happening again, or behavior that worked and a later change broke.
What is session replay?
Session replay is a reconstruction of what happened in a user’s browser, rebuilt from DOM snapshots and recorded events, so you can watch the sequence that led to an error instead of asking the user to describe it.
What are source maps?
A source map is a file that maps positions in minified, bundled, or transpiled output back to positions in the original source, so a production stack trace can be rendered with the real filename, line number, and function name.
What is a stack trace?
A stack trace is the list of function calls that were on the call stack at the moment an error was thrown, linking the function that failed to the entry point that started the chain.
What is telemetry?
Telemetry, in error monitoring, is the ordered trail of events an SDK records in the seconds before an error and ships attached to it, so you can see what the application was doing when it failed.
What is an unhandled exception?
An unhandled exception is an exception that propagates to the top of the call stack without any catch block, except clause, or rescue handler receiving it.
