add-cms

source/admin/packages/decap-cms-widget-relation/src/RelationCache.js

@@ -0,0 +1,55 @@
+class RelationCache {
+  constructor() {
+    this.cache = new Map();
+    this.pendingRequests = new Map();
+  }
+
+  async getOptions(collection, searchFields, term, file, queryFn) {
+    const cacheKey = `${collection}-${searchFields.join(',')}-${term || ''}-${file || ''}`;
+
+    if (this.cache.has(cacheKey)) {
+      return this.cache.get(cacheKey);
+    }
+
+    if (this.pendingRequests.has(cacheKey)) {
+      return this.pendingRequests.get(cacheKey);
+    }
+
+    const request = queryFn();
+    this.pendingRequests.set(cacheKey, request);
+
+    try {
+      const result = await request;
+      this.cache.set(cacheKey, result);
+      this.ensureCacheSize();
+      return result;
+    } finally {
+      this.pendingRequests.delete(cacheKey);
+    }
+  }
+
+  invalidateCollection(collection) {
+    for (const [key] of this.cache.entries()) {
+      if (key.startsWith(`${collection}-`)) {
+        this.cache.delete(key);
+      }
+    }
+  }
+
+  ensureCacheSize() {
+    const maxSize = 100;
+    if (this.cache.size > maxSize) {
+      const firstKey = this.cache.keys().next().value;
+      this.cache.delete(firstKey);
+    }
+  }
+
+  clear() {
+    this.cache.clear();
+    this.pendingRequests.clear();
+  }
+}
+
+const relationCache = new RelationCache();
+
+export default relationCache;