Use DragonflyDB (MisskeyIO#716)

docker-compose_example.yml

@@ -6,13 +6,13 @@ services:
     restart: always
     links:
       - db
-      - keydb
+      - dragonfly
 #     - mcaptcha
 #     - meilisearch
     depends_on:
       db:
         condition: service_healthy
-      keydb:
+      dragonfly:
         condition: service_healthy
     ports:
       - "3000:3000"
@@ -23,17 +23,25 @@ services:
       - ./files:/misskey/files
       - ./.config:/misskey/.config:ro
 
-  keydb:
+  dragonfly:
     restart: always
-    image: eqalpha/keydb:latest
+    image: docker.dragonflydb.io/dragonflydb/dragonfly
+    ulimits:
+      memlock: -1
+    environment:
+      DFLY_snapshot_cron: '* * * * *'
+      DFLY_version_check: false
+      DFLY_tcp_backlog: 2048
+      DFLY_default_lua_flags: allow-undeclared-keys
+      DFLY_pipeline_squash: 0
+      DFLY_multi_exec_squash: false
+      DFLY_conn_io_threads: 4
+      DFLY_epoll_file_threads: 4
+      DFLY_proactor_threads: 4
     networks:
       - internal_network
     volumes:
-      - ./keydb:/data
-    healthcheck:
-      test: "keydb-cli ping"
-      interval: 5s
-      retries: 20
+      - ./redis:/data
 
   db:
     restart: always