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@notion-headless-cms/cache-kv

v0.1.12

Published

Cloudflare KV StorageAdapter implementation for notion-headless-cms document cache layer

Downloads

1,676

Readme

@notion-headless-cms/cache-kv

Cloudflare KV をバックエンドとするドキュメントキャッシュアダプタ。DocumentCacheAdapter を実装し、テキスト(JSON)のコンテンツをキャッシュする。

インストール

npm install @notion-headless-cms/cache-kv

Cloudflare Workers では @notion-headless-cms/cache-r2cloudflarePreset を使うと KV と R2 を自動注入できる。cache-r2cache-kv を推移依存として 含むため、cloudflarePreset を使うなら個別インストール不要。

使い方

import { createCMS } from "@notion-headless-cms/core";
import { kvCache } from "@notion-headless-cms/cache-kv";
import { r2Cache } from "@notion-headless-cms/cache-r2";
import { renderMarkdown } from "@notion-headless-cms/renderer";

export default {
  async fetch(request: Request, env: {
    CACHE_KV: KVNamespace;
    CACHE_BUCKET: R2Bucket;
  }) {
    const cms = createCMS({
      dataSources: cmsDataSources,
      renderer: renderMarkdown,
      cache: {
        document: kvCache({ kv: env.CACHE_KV }),  // テキストは KV
        image: r2Cache({ bucket: env.CACHE_BUCKET }),  // 画像は R2
        ttlMs: 5 * 60 * 1000,
      },
    });

    const items = await cms.posts.getList();
    return Response.json(items);
  },
};

kvundefined の場合、kvCacheundefined を返す(キャッシュなしフォールバック用)。

プレフィックスの分離

同じ KV namespace を別プロジェクトと共有する場合は prefix を指定する。

kvCache({ kv: env.CACHE_KV, prefix: "blog/" });

生成されるキー構造:

<prefix>content           # リストキャッシュ
<prefix>content:<slug>    # 個別アイテム

API

kvCache(opts)

| オプション | 型 | 説明 | |---|---|---| | kv | KVNamespaceLike \| undefined | KV namespace バインディング。undefined の場合は kvCacheundefined を返す | | prefix | string | キャッシュキーのプレフィックス(デフォルト: "") |

戻り値は DocumentCacheAdapter<T> を満たすインスタンス。

  • KVNamespaceLike — KV namespace の構造的インターフェース。Cloudflare Workers の KVNamespace とそのまま互換で、@cloudflare/workers-types に直接依存しない。
import type { KVNamespaceLike } from "@notion-headless-cms/cache-kv";

const mock: KVNamespaceLike = {
  async get() { return null; },
  async put() {},
};

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