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  5. Redisにセッションを保存する

Redisにセッションを保存する

Webサイトのトラフィックやインフラストラクチャによって、PostgreSQLではなくRedisを使ってセッションを管理したいかもしれません。

プロジェクトのコードを分岐させて、セッションをファイルシステムからデータベースにセッションを移行したとき、新しいサービスを追加するすべての必要なステップを並べました。

こちらが、1つのパッチでプロジェクトにRedisを追加する方法です:

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--- a/.platform.app.yaml
+++ b/.platform.app.yaml
@@ -14,6 +14,7 @@ runtime:
         - iconv
         - mbstring
         - pdo_pgsql
+        - redis
         - sodium
         - xsl
         
@@ -40,6 +41,7 @@ mounts:

 relationships:
     database: "database:postgresql"
+    redis: "rediscache:redis"
     
 hooks:
     build: |
--- a/.platform/services.yaml
+++ b/.platform/services.yaml
@@ -16,3 +16,6 @@ varnish:
 files:
     type: network-storage:2.0
     disk: 256
+
+rediscache:
+    type: redis:5.0
--- a/compose.yaml
+++ b/compose.yaml
@@ -20,6 +20,10 @@ services:
       # - ./docker/db/data:/var/lib/postgresql/data:rw
 ###< doctrine/doctrine-bundle ###

+  redis:
+    image: redis:5-alpine
+    ports: [6379]
+
 volumes:
 ###> doctrine/doctrine-bundle ###
   database_data:
--- a/config/packages/framework.yaml
+++ b/config/packages/framework.yaml
@@ -9,7 +9,7 @@ framework:
     # Enables session support. Note that the session will ONLY be started if you read or write from it.
     # Remove or comment this section to explicitly disable session support.
     session:
-        handler_id: '%env(resolve:DATABASE_URL)%'
+        handler_id: '%env(REDIS_URL)%'
         cookie_secure: auto
         cookie_samesite: lax

これは 美しく ないでしょうか?

Redisサービスを追加するために、Dockerを"再起動"します:

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$ docker compose stop
$ docker compose up -d

ブラウザでWebサイトを表示して、ローカルでテストします。以前と同じくすべての機能が使えます。

通常通りコミットしてデプロイします:

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$ symfony cloud:deploy

より深く学ぶために

  • Redis ドキュメント.
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