diff --git a/src/cache/deno-kv-cache.ts b/src/cache/deno-kv-cache.ts
index 3545de8..a4aa7a2 100644
--- a/src/cache/deno-kv-cache.ts
+++ b/src/cache/deno-kv-cache.ts
@@ -9,22 +9,17 @@ export class DenoKvCache implements Cache {
         const settledKv = await this.kv;
         const blob = await kvGet(settledKv, ['cache', ...key]);
         const value = blob && JSON.parse(new TextDecoder().decode(blob));
-        const isValidCacheEntry = !!(
-            value &&
-            value.expires &&
-            value.expires > Date.now()
-        );
-        return isValidCacheEntry ? value : null;
+        return value || null;
     }
 
     public async set(key: string[], value: ResponseProps): Promise<void> {
+        const expires = calcExpires(value.headers);
         const blob = new TextEncoder().encode(JSON.stringify({
             ...value,
-            expires: calcExpires(value.headers).expires,
             headers: Object.fromEntries(value.headers.entries()),
         }));
         const settledKv = await this.kv;
-        await kvSet(settledKv, ['cache', ...key], blob);
+        await kvSet(settledKv, ['cache', ...key], blob, { expireIn: expires });
     }
 
     public async close(): Promise<void> {
diff --git a/src/cache/redis-cache.ts b/src/cache/redis-cache.ts
index 4b8be54..ac6ffca 100644
--- a/src/cache/redis-cache.ts
+++ b/src/cache/redis-cache.ts
@@ -19,24 +19,18 @@ export class RedisCache implements Cache {
         const settledRedis = await this.redis;
         const data = await settledRedis.get(this.serializeKey(key));
         const value = data && JSON.parse(data);
-        const isValidCacheEntry = !!(
-            value &&
-            value.expires &&
-            value.expires > Date.now()
-        );
-        return isValidCacheEntry ? value : null;
+        return value || null;
     }
 
     public async set(key: string[], value: ResponseProps): Promise<void> {
-        const control = calcExpires(value.headers);
+        const expires = calcExpires(value.headers);
         const data = JSON.stringify({
             ...value,
-            expires: control.expires,
             headers: Object.fromEntries(value.headers.entries()),
         });
         const settledRedis = await this.redis;
         await settledRedis.set(this.serializeKey(key), data, {
-            ex: Math.floor(control.maxAge / 1000),
+            ex: Math.floor(expires / 1000),
         });
     }
 
diff --git a/src/types.ts b/src/types.ts
index 7139bfc..3cb1b94 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -31,7 +31,6 @@ export interface HttpZResponseModel {
 export type ResponseProps = {
     url: string;
     body: string;
-    ctime?: number;
     headers: Headers;
     status: number;
     statusText: string;
diff --git a/src/utils.ts b/src/utils.ts
index b184a9f..90c243a 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -102,7 +102,7 @@ export const isForbidden = ({ status }: { status: number }): boolean => {
 
 export const calcExpires = (
     headers: Headers,
-): { maxAge: number; expires: string } => {
+): number => {
     const DEFAULT = '600';
     const cacheControl = Object.fromEntries(
         (headers.get('cache-control') ?? '').split(/\s*,\s*/g).map((part) =>
@@ -110,11 +110,7 @@ export const calcExpires = (
         ),
     );
     const effectiveMaxAge = Number(cacheControl['max-age'] || DEFAULT) * 1000;
-    const expires = String(Date.now() + effectiveMaxAge);
-    return {
-        maxAge: effectiveMaxAge,
-        expires,
-    };
+    return effectiveMaxAge;
 };
 
 export const buildDebugPerformance = (performance: Performance): string => (