diff --git a/.dockerignore b/.dockerignore
index 3819d675c8..63666d8b62 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -16,7 +16,12 @@ report.*.json
 coverage
 
 # config
-/.config
+/.config/LICENSE
+/.config/*.env
+/.config/ci.yml
+/.config/devenv.yml
+/.config/example.yml
+/.config/helm_values_example.yml
 
 # misskey
 built
diff --git a/fly.toml b/fly.toml
new file mode 100644
index 0000000000..4130c51076
--- /dev/null
+++ b/fly.toml
@@ -0,0 +1,22 @@
+# fly.toml app configuration file generated for infinite-jetzt-firefish on 2024-03-21T21:20:45-04:00
+#
+# See https://fly.io/docs/reference/configuration/ for information about how to use this file.
+#
+
+app = 'example-fly-firefish'
+primary_region = 'bos'
+
+[build]
+
+[http_service]
+  internal_port = 3000
+  force_https = true
+  auto_stop_machines = true
+  auto_start_machines = true
+  min_machines_running = 0
+  processes = ['firefish']
+
+[[vm]]
+  memory = '1gb'
+  cpu_kind = 'shared'
+  cpus = 1
diff --git a/packages/backend/check_connect.js b/packages/backend/check_connect.js
index 7c1e716b3e..632092fe98 100644
--- a/packages/backend/check_connect.js
+++ b/packages/backend/check_connect.js
@@ -2,7 +2,9 @@ import { loadConfig } from "./built/config.js";
 import { createRedisConnection } from "./built/redis.js";
 
 const config = loadConfig();
-const redis = createRedisConnection(config);
+const redis = createRedisConnection({
+	...config,
+});
 
 redis.on("connect", () => redis.disconnect());
 redis.on("error", (e) => {
diff --git a/packages/backend/src/db/postgre.ts b/packages/backend/src/db/postgre.ts
index 6baccaa271..52536bb59b 100644
--- a/packages/backend/src/db/postgre.ts
+++ b/packages/backend/src/db/postgre.ts
@@ -189,11 +189,17 @@ const log = process.env.NODE_ENV !== "production";
 
 export const db = new DataSource({
 	type: "postgres",
-	host: config.db.host,
-	port: config.db.port,
-	username: config.db.user,
-	password: config.db.pass,
-	database: config.db.db,
+	...(process.env.DATABASE_URL
+		? {
+				url: process.env.DATABASE_URL,
+			}
+		: {
+				host: config.db.host,
+				port: config.db.port,
+				username: config.db.user,
+				password: config.db.pass,
+				database: config.db.db,
+			}),
 	extra: {
 		statement_timeout: 1000 * 30,
 		...config.db.extra,
@@ -203,16 +209,21 @@ export const db = new DataSource({
 	cache: !config.db.disableCache
 		? {
 				type: "ioredis",
-				options: {
-					host: config.redis.host,
-					port: config.redis.port,
-					family: config.redis.family == null ? 0 : config.redis.family,
-					username: config.redis.user ?? "default",
-					password: config.redis.pass,
-					keyPrefix: `${config.redis.prefix}:query:`,
-					db: config.redis.db || 0,
-					tls: config.redis.tls,
-				},
+				port: process.env.REDIS_URL, // typeorm passes "port" as the first argument to ioredis when using the "ioredis" cache driver so we can use it to pass the redis url
+				options: process.env.REDIS_URL
+					? {
+							keyPrefix: `${config.redis.prefix}:query:`,
+						}
+					: {
+							host: config.redis.host,
+							port: config.redis.port,
+							family: config.redis.family == null ? 0 : config.redis.family,
+							username: config.redis.user ?? "default",
+							password: config.redis.pass,
+							keyPrefix: `${config.redis.prefix}:query:`,
+							db: config.redis.db || 0,
+							tls: config.redis.tls,
+						},
 			}
 		: false,
 	logging: log,
diff --git a/packages/backend/src/db/redis.ts b/packages/backend/src/db/redis.ts
index 215effd8ea..61df87e0e7 100644
--- a/packages/backend/src/db/redis.ts
+++ b/packages/backend/src/db/redis.ts
@@ -6,16 +6,18 @@ export function createConnection() {
 	if (config.cacheServer) {
 		source = config.cacheServer;
 	}
-	return new Redis({
-		port: source.port,
-		host: source.host,
-		family: source.family ?? 0,
-		password: source.pass,
-		username: source.user ?? "default",
-		keyPrefix: `${source.prefix}:`,
-		db: source.db || 0,
-		tls: source.tls,
-	});
+	return new Redis(
+		process.env.REDIS_URL || {
+			port: source.port,
+			host: source.host,
+			family: source.family ?? 0,
+			password: source.pass,
+			username: source.user ?? "default",
+			keyPrefix: `${source.prefix}:`,
+			db: source.db || 0,
+			tls: source.tls,
+		},
+	);
 }
 
 export const subscriber = createConnection();
diff --git a/packages/backend/src/ormconfig.ts b/packages/backend/src/ormconfig.ts
index a1891e00df..a18828834d 100644
--- a/packages/backend/src/ormconfig.ts
+++ b/packages/backend/src/ormconfig.ts
@@ -4,12 +4,18 @@ import { entities } from "./db/postgre.js";
 
 export default new DataSource({
 	type: "postgres",
-	host: config.db.host,
-	port: config.db.port,
-	username: config.db.user,
-	password: config.db.pass,
-	database: config.db.db,
-	extra: config.db.extra,
+	...(process.env.DATABASE_URL
+		? {
+				url: process.env.DATABASE_URL,
+			}
+		: {
+				host: config.db.host,
+				port: config.db.port,
+				username: config.db.user,
+				password: config.db.pass,
+				database: config.db.db,
+			}),
+	...(config.db && { extra: config.db.extra }),
 	entities: entities,
 	migrations: ["built/migration/*.js"],
 });
diff --git a/packages/backend/src/queue/initialize.ts b/packages/backend/src/queue/initialize.ts
index a874005fbd..a83c732032 100644
--- a/packages/backend/src/queue/initialize.ts
+++ b/packages/backend/src/queue/initialize.ts
@@ -2,16 +2,18 @@ import Bull from "bull";
 import config from "@/config/index.js";
 
 export function initialize<T>(name: string, limitPerSec = -1) {
-	return new Bull<T>(name, {
-		redis: {
-			port: config.redis.port,
-			host: config.redis.host,
-			family: config.redis.family == null ? 0 : config.redis.family,
-			username: config.redis.user ?? "default",
-			password: config.redis.pass,
-			db: config.redis.db || 0,
-			tls: config.redis.tls,
-		},
+	return new Bull<T>(name, process.env.REDIS_URL, {
+		redis: process.env.REDIS_URL
+			? undefined
+			: {
+					port: config.redis.port,
+					host: config.redis.host,
+					family: config.redis.family == null ? 0 : config.redis.family,
+					username: config.redis.user ?? "default",
+					password: config.redis.pass,
+					db: config.redis.db || 0,
+					tls: config.redis.tls,
+				},
 		prefix: config.redis.prefix ? `${config.redis.prefix}:queue` : "queue",
 		limiter:
 			limitPerSec > 0