OpenTelemetry (OTel) vs. Java Flight Recorder (JFR)

OpenTelemetry (OTel) and Java Flight Recorder (JFR) are tools used for observability, profiling, and monitoring but serve different purposes. OTel is a broader observability framework that collects traces, metrics, and logs from distributed applications and supports multiple programming languages. JFR is a detailed, low-overhead profiling tool integrated into the JVM for monitoring Java applications. The post compares their features, use cases, and technical aspects to help readers choose the right tool for their needs.