A mapped diagnostic context (MDC) for use with the log crate.
An MDC is a thread local map of strings used to make relevant information from a system available in its log messages. Logging crates such as log4rs will retrieve values from the MDC for output.
For example, a web server may process many requests simultaneously on different threads. Generating an ID for each request and storing it in the MDC makes it easy to partition log messages on a per-request basis.
Licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.
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