trying to make redis expire more backwards compatible as each beamline has different version of redis

src/aare/daq/config.py

@@ -342,8 +342,18 @@ class BeamlineConfig:
                 raise Exception(
                     "There is no active session with given id. Try again later."
                 )
+            # if active == session:
+            #     self.__client.expire(f"{self.__bl}:active_session", expiry_sec, gt=True)
+
             if active == session:
-                self.__client.expire(f"{self.__bl}:active_session", expiry_sec, gt=True)
+                key = f"{self.__bl}:active_session"
+                current_ttl = self.__client.ttl(key)
+
+                # Redis compatibility:
+                # some Redis servers do not support EXPIRE with GT option.
+                # Emulate "extend only if greater" manually while holding the lock.
+                if current_ttl is None or current_ttl < 0 or current_ttl < expiry_sec:
+                    self.__client.expire(key, expiry_sec)
             else:
                 raise Exception(
                     "There is already active session with different id. Try again later."