[radmap] "light mode" + lower priority for dragonfly

README.md

@@ -2082,8 +2082,9 @@ Detalized event semantics and payload structure:
     ```ruby
     rql.lock_series('lock_a', 'lock_b', 'lock_c') { puts 'locked' }
     ```
-  - support for `Dragonfly` database backend (https://github.com/dragonflydb/dragonfly) (https://www.dragonflydb.io/);
+  - `light mode`: an ability to work without any debug and instrumentation logic and data (totally reduced debugging and instrumenting possibilities, but better performance);
 - **Minor**:
+  - support for `Dragonfly` database backend (https://github.com/dragonflydb/dragonfly) (https://www.dragonflydb.io/);
   - Semantic error objects for unexpected Redis errors;
   - **Experimental feature**: (non-`timed` locks): per-ruby-block-holding-the-lock sidecar `Ractor` and `in progress queue` in RedisDB that will extend
     the acquired lock for long-running blocks of code (that invoked "under" the lock