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Recently I was debugging a memory leak in a Java 11 code running in AWS Lambda. Here are two tricks you may find useful if you need to do similar. Taking a memory dump There is no direct way to take a dump from outside of the lambda. You can use the following code and … Continue reading Debugging AWS Lambda and taking memory dumps
This is the ninetieth fourth part of the ILP series. For your convenience you can find other parts in the table of contents in Part 1 – Boolean algebra Let’s solve Horrendum. It’s a fancy sudoku. First, we need to make sure that numbers in rows and columns are unique (as always). We also need … Continue reading ILP Part 94 — Horrendum
This is the eighteenth part of the Types and Programming Languages series. For your convenience you can find other parts in the table of contents in Part 1 — Do not return in finally The title seems obvious, right? Your language dictates the rules and you need to play by the book. However, consequences are … Continue reading Types and Programming Languages Part 18 – Your defaults influence the way you think
This is the fifteenth part of the Chatterbox series. For your convenience you can find other parts in the table of contents in Part 1 – Origins We know how to initiate audio conferences with other parties as we covered that in Chatterbox Part 9 — Calling Facebook using GSM. Now we want to do … Continue reading Chatterbox Part 15 — Make Messenger call you
This is the seventeenth part of the Types and Programming Languages series. For your convenience you can find other parts in the table of contents in Part 1 — Do not return in finally Today a short example of how to break LSP in practice. It’s a trivial code, but it’s relatively easy to fall … Continue reading Types and Programming Languages Part 17 – LSP in practice