NanoLog

NanoLog is a nanosecond scale logging system that is 1–2 orders of magnitude faster than existing logging systems such as Log4j2, spdlog, Boost log or Event Tracing for Windows. The system achieves a throughput up to 80 million log messages per second for simple messages and has a typical log invocation overhead of 8–18 nanoseconds, despite exposing a traditional printf-like API.

NanoLog slims down user log messages at compile-time by extracting static log components, outputs the log in a compacted binary format at runtime, and utilizes an offline process to re-inflate the compacted logs. The lower cost of NanoLog allows developers to log more often, log in more detail, and use logging in low-latency production settings where traditional logging mechanisms are too expensive.