diff --git a/src/libbot/__init__.py b/src/libbot/__init__.py
index fcb6220..6604090 100644
--- a/src/libbot/__init__.py
+++ b/src/libbot/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "4.2.0"
+__version__ = "4.3.0"
 __license__ = "GPL3"
 __author__ = "Profitroll"
 
diff --git a/src/libbot/cache/classes/cache.py b/src/libbot/cache/classes/cache.py
index 8b0f617..5f9846c 100644
--- a/src/libbot/cache/classes/cache.py
+++ b/src/libbot/cache/classes/cache.py
@@ -1,5 +1,5 @@
 from abc import ABC, abstractmethod
-from typing import Any, Dict
+from typing import Any, Dict, Optional
 
 import pymemcache
 import redis
@@ -27,16 +27,16 @@ class Cache(ABC):
         pass
 
     @abstractmethod
-    def set_json(self, key: str, value: Any) -> None:
+    def set_json(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
         # TODO This method must also carry out ObjectId conversion!
         pass
 
     @abstractmethod
-    def set_string(self, key: str, value: str) -> None:
+    def set_string(self, key: str, value: str, ttl_seconds: Optional[int] = None) -> None:
         pass
 
     @abstractmethod
-    def set_object(self, key: str, value: Any) -> None:
+    def set_object(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
         pass
 
     @abstractmethod
diff --git a/src/libbot/cache/classes/cache_memcached.py b/src/libbot/cache/classes/cache_memcached.py
index f592b1d..a88c476 100644
--- a/src/libbot/cache/classes/cache_memcached.py
+++ b/src/libbot/cache/classes/cache_memcached.py
@@ -69,28 +69,28 @@ class CacheMemcached(Cache):
     def get_object(self, key: str) -> Any | None:
         raise NotImplementedError()
 
-    def set_json(self, key: str, value: Any) -> None:
+    def set_json(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
         key = self._get_prefixed_key(key)
 
         try:
-            self.client.set(key, _json_to_string(value))
+            self.client.set(key, _json_to_string(value), expire=0 if ttl_seconds is None else ttl_seconds)
             logger.debug("Set json cache key '%s'", key)
         except Exception as exc:
             logger.error("Could not set json cache key '%s' due to: %s", key, exc)
             return None
 
-    def set_string(self, key: str, value: str) -> None:
+    def set_string(self, key: str, value: str, ttl_seconds: Optional[int] = None) -> None:
         key = self._get_prefixed_key(key)
 
         try:
-            self.client.set(key, value)
+            self.client.set(key, value, expire=0 if ttl_seconds is None else ttl_seconds)
             logger.debug("Set string cache key '%s'", key)
         except Exception as exc:
             logger.error("Could not set string cache key '%s' due to: %s", key, exc)
             return None
 
     # TODO Implement binary serialization
-    def set_object(self, key: str, value: Any) -> None:
+    def set_object(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
         raise NotImplementedError()
 
     def delete(self, key: str) -> None:
diff --git a/src/libbot/cache/classes/cache_redis.py b/src/libbot/cache/classes/cache_redis.py
index 797a866..d70076a 100644
--- a/src/libbot/cache/classes/cache_redis.py
+++ b/src/libbot/cache/classes/cache_redis.py
@@ -69,28 +69,28 @@ class CacheRedis(Cache):
     def get_object(self, key: str) -> Any | None:
         raise NotImplementedError()
 
-    def set_json(self, key: str, value: Any) -> None:
+    def set_json(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
         key = self._get_prefixed_key(key)
 
         try:
-            self.client.set(key, _json_to_string(value))
+            self.client.set(key, _json_to_string(value), ex=ttl_seconds)
             logger.debug("Set json cache key '%s'", key)
         except Exception as exc:
             logger.error("Could not set json cache key '%s' due to: %s", key, exc)
             return None
 
-    def set_string(self, key: str, value: str) -> None:
+    def set_string(self, key: str, value: str, ttl_seconds: Optional[int] = None) -> None:
         key = self._get_prefixed_key(key)
 
         try:
-            self.client.set(key, value)
+            self.client.set(key, value, ex=ttl_seconds)
             logger.debug("Set string cache key '%s'", key)
         except Exception as exc:
             logger.error("Could not set string cache key '%s' due to: %s", key, exc)
             return None
 
     # TODO Implement binary serialization
-    def set_object(self, key: str, value: Any) -> None:
+    def set_object(self, key: str, value: Any, ttl_seconds: Optional[int] = None) -> None:
         raise NotImplementedError()
 
     def delete(self, key: str) -> None: