add BoolCacheable

redis_decorators/cache_element.py

@@ -5,7 +5,7 @@
 
 from redis import Redis
 
-from .cacheable import Cacheable, StringCacheable
+from .cacheable import Cacheable, StringCacheable, BoolCacheable
 
 FetchType = TypeVar('FetchType')
 StoreType = TypeVar('StoreType')

redis_decorators/cacheable.py

@@ -82,3 +82,11 @@ def store(self, client: Redis, key: str, value: ListCacheType):
 
     def fetch(self, client: Redis, key: str) -> Optional[ListCacheType]:
         return client.lrange(key, 0, -1) or None
+
+class BoolCacheable(Cacheable[bool]):
+    def store(self, client: Redis, key: str, value: bool):
+        client.set(key, str(value))
+
+    def fetch(self, client: Redis, key: bool) -> Optional[bool]:
+        res = client.get(key)
+        return bool(res) if res else None

redis_decorators/caching.py

@@ -6,6 +6,7 @@
 
 from .cache_element import CacheDateTime, CacheElement, CacheElementSingleType
 from .cacheable import (
+    BoolCacheable,
     DictCacheable,
     DictCacheType,
     DictStringCacheable,
@@ -129,6 +130,14 @@ def cache_datetime(self, get_cache_key: Callable[..., str] = None, **kwargs):
         return self.cache_value(CacheDateTime(), get_cache_key, **kwargs)
 
 
+    def cache_bool(self, get_cache_key: Callable[..., str] = None, **kwargs):
+        """Decorate a function to store a string."""
+        return self.cache_value(
+            CacheElementSingleType[str](cacheable=BoolCacheable()),
+            get_cache_key,
+            **kwargs,
+        )
+
 class CacheValueWrapper:
     def __init__(
         self,