perf: optimize Twenty CRM resource usage

- Reduce defaults: 4 CPU/8GB → 2 CPU/4GB (official min is 2GB)
- Node.js heap: 512MB server, 384MB worker (runtime)
- Build-time heap: 3072MB (only during compilation)
- PG pool: reduce to 5 connections
- PostgreSQL: tune shared_buffers/work_mem/effective_cache_size
- Redis: cap at 64MB with noeviction policy
- Unset NODE_OPTIONS after build to not leak into runtime

ct/twenty.sh

@@ -8,8 +8,8 @@ source <(curl -fsSL "$COMMUNITY_SCRIPTS_URL/misc/build.func")
 
 APP="Twenty"
 var_tags="${var_tags:-crm;business;contacts}"
-var_cpu="${var_cpu:-4}"
+var_cpu="${var_cpu:-2}"
-var_ram="${var_ram:-8192}"
+var_ram="${var_ram:-4096}"
 var_disk="${var_disk:-20}"
 var_os="${var_os:-debian}"
 var_version="${var_version:-13}"
@@ -51,11 +51,12 @@ function update_script() {
     export COREPACK_ENABLE_DOWNLOAD_PROMPT=0
     $STD corepack enable
     $STD corepack prepare yarn@4.9.2 --activate
-    export NODE_OPTIONS="--max-old-space-size=4096"
+    export NODE_OPTIONS="--max-old-space-size=3072"
     $STD yarn install --immutable || $STD yarn install
     $STD npx nx run twenty-server:build
     $STD npx nx build twenty-front
     cp -r /opt/twenty/packages/twenty-front/build /opt/twenty/packages/twenty-server/dist/front
+    unset NODE_OPTIONS
     msg_ok "Built Application"
 
     msg_info "Running Database Migrations"

frontend/public/json/twenty.json

@@ -19,8 +19,8 @@
             "type": "default",
             "script": "ct/twenty.sh",
             "resources": {
-                "cpu": 4,
+                "cpu": 2,
-                "ram": 8192,
+                "ram": 4096,
                 "hdd": 20,
                 "os": "Debian",
                 "version": "13"

install/twenty-install.sh

@@ -30,11 +30,12 @@ cd /opt/twenty
 export COREPACK_ENABLE_DOWNLOAD_PROMPT=0
 $STD corepack enable
 $STD corepack prepare yarn@4.9.2 --activate
-export NODE_OPTIONS="--max-old-space-size=4096"
+export NODE_OPTIONS="--max-old-space-size=3072"
 $STD yarn install --immutable || $STD yarn install
 $STD npx nx run twenty-server:build
 $STD npx nx build twenty-front
 cp -r /opt/twenty/packages/twenty-front/build /opt/twenty/packages/twenty-server/dist/front
+unset NODE_OPTIONS
 msg_ok "Built Application"
 
 msg_info "Configuring Application"
@@ -43,6 +44,7 @@ mkdir -p /opt/twenty/packages/twenty-server/.local-storage
 cat <<EOF >/opt/twenty/.env
 NODE_PORT=3000
 PG_DATABASE_URL=postgresql://${PG_DB_USER}:${PG_DB_PASS}@localhost:5432/${PG_DB_NAME}
+PG_POOL_MAX_CONNECTIONS=5
 REDIS_URL=redis://localhost:6379
 SERVER_URL=http://${LOCAL_IP}:3000
 APP_SECRET=${APP_SECRET}
@@ -51,6 +53,23 @@ NODE_ENV=production
 EOF
 msg_ok "Configured Application"
 
+msg_info "Tuning Services"
+# Redis: cap memory at 64MB with LRU eviction
+cat <<EOF >>/etc/redis/redis.conf
+maxmemory 64mb
+maxmemory-policy noeviction
+EOF
+systemctl restart redis-server
+
+# PostgreSQL: optimize for low-memory LXC
+PG_CONF="/etc/postgresql/16/main/postgresql.conf"
+sed -i "s/^shared_buffers.*/shared_buffers = 128MB/" "$PG_CONF"
+sed -i "s/^#work_mem.*/work_mem = 4MB/" "$PG_CONF"
+sed -i "s/^#effective_cache_size.*/effective_cache_size = 256MB/" "$PG_CONF"
+sed -i "s/^#maintenance_work_mem.*/maintenance_work_mem = 64MB/" "$PG_CONF"
+systemctl restart postgresql
+msg_ok "Tuned Services"
+
 msg_info "Running Database Migrations"
 cd /opt/twenty/packages/twenty-server
 set -a && source /opt/twenty/.env && set +a
@@ -71,6 +90,7 @@ User=root
 WorkingDirectory=/opt/twenty/packages/twenty-server
 EnvironmentFile=/opt/twenty/.env
 ExecStart=/usr/bin/node dist/main
+Environment=NODE_OPTIONS=--max-old-space-size=512
 Restart=on-failure
 RestartSec=5
 
@@ -92,6 +112,7 @@ EnvironmentFile=/opt/twenty/.env
 Environment=DISABLE_DB_MIGRATIONS=true
 Environment=DISABLE_CRON_JOBS_REGISTRATION=true
 ExecStart=/usr/bin/node dist/queue-worker/queue-worker
+Environment=NODE_OPTIONS=--max-old-space-size=384
 Restart=on-failure
 RestartSec=5