Application errors

Exceptions that are the result of an error or unexpected issue should be logged, along with the stack trace containing details for where exactly the code failed.

Not all exceptions may be interesting to log. For example: if your user requests to delete an inexisting element in a database, your application may raise an exception that is handled for a nice response to the user. This exception is probably not necessary to log, unless there’s some value to it depending on the context.

HTTP Headers

In case your Lamdba is serving as a public API backend (perhaps connected to API Gateway), it is interesting to log the request and response headers, as well as data POSTed or PUT by the requesters – be sure to not log data that is potentially sensitive or secret.

Debug info

If your application flow is complex enough, placing some manual logging messages may be helpful to debug potential issues later. Using a tracing system, such as AWS X-Ray, which also integrates with Dashbird, is also highly recommended in this case.

Processes and threads

For projects that rely on concurrent and/or parallel execution, it may be interesting to place additional logs to help in identifying what is being executed in each thread and/or process.

Security Logs

In the next section of best practices, we present a list of items that are important to log from a security perspective, be sure to check them out as a complement to the current section.

We aim to improve Dashbird every day and user feedback is extremely important for that, so please let us know if you have any feedback about our features and error handling! We would really appreciate it!


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