Hot Loop
Noun · Slang & Abbreviations
Definitions
A tight frequently executed loop that matters a lot for performance. In engineering slang, hot loops are where tiny inefficiencies can become big costs because the code runs so often.
In plain English: A frequently executed loop where performance matters a lot.
Example: "The profiler showed the JSON normalization living in a hot loop, which explained why a seemingly small string allocation was dominating latency."