Docker-compose: increase max connections and db pool size

Add CL entry

CHANGELOG.md

@@ -34,6 +34,7 @@
 
 ### Chore
 
+- [#6877](https://github.com/blockscout/blockscout/pull/6877) - Docker-compose: increase default max connections and db pool size
 - [#6853](https://github.com/blockscout/blockscout/pull/6853) - Fix 503 page
 - [#6845](https://github.com/blockscout/blockscout/pull/6845) - Extract Docker-compose services into separate files
 - [#6839](https://github.com/blockscout/blockscout/pull/6839) - Add cache to transaction actions parser

docker-compose/docker-compose.yml

@@ -2,24 +2,14 @@ version: '3.8'
 
 services:
   redis_db:
-    image: 'redis:alpine'
-    ports:
-      - 6379:6379
-    container_name: redis_db
-    command: redis-server
-    volumes:
-      - ./redis-data:/data
+    extends:
+      file: ./services/docker-compose-redis.yml
+      service: redis_db
 
   db:
-    image: postgres:14
-    restart: always
-    container_name: 'postgres'
-    environment:
-        POSTGRES_PASSWORD: ''
-        POSTGRES_USER: 'postgres'
-        POSTGRES_HOST_AUTH_METHOD: 'trust'
-    ports:
-      - 7432:5432
+    extends:
+      file: ./services/docker-compose-db.yml
+      service: db
 
   blockscout:
     platform: linux/x86_64

docker-compose/envs/common-blockscout.env

@@ -34,7 +34,7 @@ EXCHANGE_RATES_COIN=
 # EXCHANGE_RATES_COINGECKO_COIN_ID=
 # EXCHANGE_RATES_COINGECKO_API_KEY=
 # EXCHANGE_RATES_COINMARKETCAP_API_KEY=
-POOL_SIZE=40
+POOL_SIZE=90
 POOL_SIZE_API=10
 ECTO_USE_SSL=false
 # DATADOG_HOST=

docker-compose/services/docker-compose-db.yml

@@ -5,6 +5,7 @@ services:
     image: postgres:14
     restart: always
     container_name: 'postgres'
+    command: postgres -c 'max_connections=200'
     environment:
         POSTGRES_PASSWORD: ''
         POSTGRES_USER: 'postgres'