Function RM_GetUsedMemoryRatio

app/redis-6.2.6/src/module.c:7569–7573

Return the a number between 0 to 1 indicating the amount of memory * currently used, relative to the Redis "maxmemory" configuration. * * * 0 - No memory limit configured. * * Between 0 and 1 - The percentage of the memory used normalized in 0-1 range. * * Exactly 1 - Memory limit reached. * * Greater 1 - More memory used than the configured limit. */

 * * Greater 1 - More memory used than the configured limit.
 */
float RM_GetUsedMemoryRatio(){
    float level;
    getMaxmemoryState(NULL, NULL, NULL, &level);
    return level;
}

/* --------------------------------------------------------------------------
 * ## Scanning keyspace and hashes