At Plumbr, we're constantly working on how software can be made faster and more reliable. The promise we've made to our customers is to avoid 100 million failures and save 100 million hours for their users per year.
While we're making things better for engineers around the world, we're also improving our software. Recently, I invested time in tuning the performance of one particular part of the Plumbr codebase. It is quite a tight loop, reading data from Kafka, performing several computations, and then writing data to a file. After several rounds of optimization, an unexpected code path started appearing on the profiler output.