FAQ about Prometheus 2.43 String Labels Optimization

Prometheus 2.43 introduces string label optimizations—a new data structure for labels that reduces memory usage and potentially increases speed—but these are not enabled by default. Users must compile Prometheus with a specific Go tag or download a special “stringlabels” binary to utilize this feature, which will be standard in the 2.44 release. Beyond this, the 2.43 release also includes improvements to scrape config management and HTTP client configuration.