Macro info_every_n 

macro_rules! info_every_n {
    ($n:expr, $($args:tt)+) => { ... };
}

Count-based rate-limited logging that emits on the first invocation, then once every N invocations per call site (matching glog behavior).

Uses atomic operations with relaxed ordering for minimal overhead.

Example

// Basic message
info_every_n!(100, "periodic status");

// With format args
info_every_n!(50, "processed {} items", count);

// With key-value pairs
info_every_n!(100, actor_id = id, "actor started");