Add abstract CacheLayer class

src/Socialbox/Abstracts/CacheLayer.php

@@ -0,0 +1,47 @@
+<?php
+
+namespace Socialbox\Abstracts;
+
+abstract class CacheLayer
+{
+    /**
+     * Stores a value in the cache with an associated key and an optional time-to-live (TTL).
+     *
+     * @param string $key The key under which the value is stored.
+     * @param mixed $value The value to be stored.
+     * @param int $ttl Optional. The time-to-live for the cache entry in seconds. A value of 0 indicates no expiration.
+     * @return bool Returns true if the value was successfully set, false otherwise.
+     */
+    public abstract function set(string $key, mixed $value, int $ttl=0): bool;
+
+    /**
+     * Retrieves a value from the cache with the specified key.
+     *
+     * @param string $key The key of the value to retrieve.
+     * @return mixed The value associated with the key, or null if the key does not exist.
+     */
+    public abstract function get(string $key): mixed;
+
+    /**
+     * Deletes a value from the cache with the specified key.
+     *
+     * @param string $key The key of the value to delete.
+     * @return bool Returns true if the value was successfully deleted, false otherwise.
+     */
+    public abstract function delete(string $key): bool;
+
+    /**
+     * Checks if a value exists in the cache with the specified key.
+     *
+     * @param string $key The key to check.
+     * @return bool Returns true if the key exists, false otherwise.
+     */
+    public abstract function exists(string $key): bool;
+
+    /**
+     * Clears all values from the cache.
+     *
+     * @return bool Returns true if the cache was successfully cleared, false otherwise.
+     */
+    public abstract function clear(): bool;
+}