Examples described herein relate to policy-based logging using workload profiles. A workload profile of a first workload is identified. Based on the workload profile, a logging policy, which includes a predefined log pattern and a predefined log depth, is compiled. Workload log messages of a predetermined log level that are associated with the first workload are stored in a cache memory. On detecting the predefined log pattern in the workload log messages stored in the cache memory, the workload log messages are logged to a log file based on the predefined log depth.