api: implement redis/memory store for cache

api/src/store/base-store.js

@@ -0,0 +1,39 @@
+const _stores = new Set();
+
+export class Store {
+    id;
+
+    constructor(name) {
+        name = name.toUpperCase();
+
+        if (_stores.has(name))
+            throw `${name} store already exists`;
+        _stores.add(name);
+
+        this.id = name;
+    }
+
+    async _get(_key) { throw "needs implementation" }
+    async get(key) {
+        if (typeof key !== 'string') {
+            key = key.toString();
+        }
+
+        const val = await this._get(key);
+        if (val === null)
+            return null;
+
+        return val;
+    }
+
+    async _set(_key, _val, _exp_sec = -1) { throw "needs implementation" }
+    set(key, val, exp_sec = -1) {
+        if (typeof key !== 'string') {
+            key = key.toString();
+        }
+
+        exp_sec = Math.round(exp_sec);
+
+        return this._set(key, val, exp_sec);
+    }
+};