Fixes: 1) Add missing sys import in caches.py; 2) Ensure CACHEOPS_REDIS is only declared when CACHEOPS_ENABLED is True;
Extra: 1) Formatting and cleanup for readability in settings and auto-resolve methods; 2) Rearrange cacheops import in base settings;
Fixes: None;
Extra: 1) Update indentation for improved readability; 2) Set ELASTICSEARCH_DSL_AUTOSYNC and ELASTICSEARCH_DSL_PARALLEL to False for configuration change;