diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..36cc29e
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,31 @@
+# Build stage
+FROM oven/bun:1 AS builder
+
+WORKDIR /app
+
+# Copy package files
+COPY package.json .
+COPY bun.lockb .
+
+# Install dependencies
+RUN bun install --frozen-lockfile
+
+# Copy source code
+COPY . .
+
+# Build the application
+RUN bun build ./src/index.ts --compile --outfile server
+
+# Production stage
+FROM debian:bookworm-slim
+
+WORKDIR /app
+
+# Copy only the compiled binary from builder
+COPY --from=builder /app/server .
+
+# Expose the port your app runs on
+EXPOSE 3000
+
+# Run the binary
+CMD ["./server"]
\ No newline at end of file
diff --git a/bun.lockb b/bun.lockb
new file mode 100755
index 0000000..bc19a66
Binary files /dev/null and b/bun.lockb differ
diff --git a/docker-compose.yaml b/docker-compose.yaml
new file mode 100644
index 0000000..048a584
--- /dev/null
+++ b/docker-compose.yaml
@@ -0,0 +1,48 @@
+services:
+  api:
+    build:
+      context: .
+      dockerfile: Dockerfile
+    ports:
+      - "3000:3000"
+    environment:
+      - NODE_ENV=production
+      - OTEL_EXPORTER_OTLP_ENDPOINT=http://tracing:4318
+      - OTEL_EXPORTER_OTLP_PROTOCOL=http/protobuf
+    networks:
+      - api-network
+    depends_on:
+      - tracing
+
+  tracing:
+    image: jaegertracing/all-in-one:latest
+    environment:
+      - COLLECTOR_ZIPKIN_HOST_PORT=:9411
+      - COLLECTOR_OTLP_ENABLED=true
+    ports:
+      # UI
+      - "16686:16686"
+      # Zipkin compatible endpoint
+      - "9411:9411"
+      # OTLP gRPC
+      - "4317:4317"
+      # OTLP HTTP
+      - "4318:4318"
+      # Jaeger gRPC
+      - "14250:14250"
+      # Jaeger HTTP
+      - "14268:14268"
+      # Admin HTTP
+      - "14269:14269"
+      # Agent configs
+      - "5778:5778"
+      # Thrift compact
+      - "6831:6831/udp"
+      # Thrift binary
+      - "6832:6832/udp"
+    networks:
+      - api-network
+
+networks:
+  api-network:
+    driver: bridge
diff --git a/package.json b/package.json
index c427aa5..1dc1017 100644
--- a/package.json
+++ b/package.json
@@ -3,9 +3,13 @@
   "version": "1.0.50",
   "scripts": {
     "test": "echo \"Error: no test specified\" && exit 1",
-    "dev": "bun run --watch src/index.ts"
+    "dev": "bun run --watch src/index.ts",
+    "build": "bun build --compile --minify-whitespace --minify-syntax --target bun --outfile server ./src/index.ts"
   },
   "dependencies": {
+    "@elysiajs/opentelemetry": "^1.2.0",
+    "@elysiajs/server-timing": "^1.2.0",
+    "@elysiajs/swagger": "^1.2.0",
     "elysia": "latest"
   },
   "devDependencies": {
diff --git a/src/index.ts b/src/index.ts
index 9c1f7a1..5ad5897 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -1,7 +1,19 @@
 import { Elysia } from "elysia";
+import { swagger } from "@elysiajs/swagger";
+import { opentelemetry } from "@elysiajs/opentelemetry";
+import { serverTiming } from "@elysiajs/server-timing";
 
-const app = new Elysia().get("/", () => "Hello Elysia").listen(3000);
+import { note } from "./routes/note";
+import { user } from "./routes/user";
 
-console.log(
-  `🦊 Elysia is running at ${app.server?.hostname}:${app.server?.port}`
-);
+const app = new Elysia()
+  .use(opentelemetry())
+  .use(swagger())
+  .use(serverTiming())
+  .onError(({ error, code }) => {
+    if (code === "NOT_FOUND") return "Not Found :(";
+    console.error(error);
+  })
+  .use(user)
+  .use(note)
+  .listen(3000);
diff --git a/src/routes/note.ts b/src/routes/note.ts
new file mode 100644
index 0000000..3ba2538
--- /dev/null
+++ b/src/routes/note.ts
@@ -0,0 +1,91 @@
+import { Elysia, t } from "elysia";
+import { getUserId, userService } from "./user";
+
+const memo = t.Object({
+  data: t.String(),
+  author: t.String(),
+});
+
+type Memo = typeof memo.static;
+
+class Note {
+  constructor(
+    public data: Memo[] = [
+      {
+        data: "Moonhalo",
+        author: "saltyaom",
+      },
+    ]
+  ) {}
+
+  add(note: Memo) {
+    this.data.push(note);
+
+    return this.data;
+  }
+
+  remove(index: number) {
+    return this.data.splice(index, 1);
+  }
+
+  update(index: number, note: Partial<Memo>) {
+    return (this.data[index] = { ...this.data[index], ...note });
+  }
+}
+
+export const note = new Elysia({ prefix: "/note" })
+  .use(userService)
+  .decorate("note", new Note())
+  .model({
+    memo: t.Omit(memo, ["author"]),
+  })
+  .onTransform(function log({ body, params, path, request: { method } }) {
+    console.log(`${method} ${path}`, {
+      body,
+      params,
+    });
+  })
+  .get("/", ({ note }) => note.data)
+  .use(getUserId)
+  .put(
+    "/",
+    ({ note, body: { data }, username }) =>
+      note.add({ data, author: username }),
+    {
+      body: "memo",
+    }
+  )
+  .get(
+    "/:index",
+    ({ note, params: { index }, error }) => {
+      return note.data[index] ?? error(404, "Not Found :(");
+    },
+    {
+      params: t.Object({
+        index: t.Number(),
+      }),
+    }
+  )
+  .guard({
+    params: t.Object({
+      index: t.Number(),
+    }),
+  })
+  .delete("/:index", ({ note, params: { index }, error }) => {
+    if (index in note.data) return note.remove(index);
+
+    return error(422);
+  })
+  .patch(
+    "/:index",
+    ({ note, params: { index }, body: { data }, error, username }) => {
+      if (index in note.data)
+        return note.update(index, { data, author: username });
+
+      return error(422);
+    },
+    {
+      isSignIn: true,
+      body: "memo",
+    }
+  );
diff --git a/src/routes/user.ts b/src/routes/user.ts
new file mode 100644
index 0000000..b486ac4
--- /dev/null
+++ b/src/routes/user.ts
@@ -0,0 +1,129 @@
+import { Elysia, t } from "elysia";
+
+export const userService = new Elysia({ name: "user/service" })
+  .state({
+    user: {} as Record<string, string>,
+    session: {} as Record<number, string>,
+  })
+  .model({
+    signIn: t.Object({
+      username: t.String({ minLength: 1 }),
+      password: t.String({ minLength: 8 }),
+    }),
+    session: t.Cookie(
+      {
+        token: t.Number(),
+      },
+      {
+        secrets: "seia",
+      }
+    ),
+    optionalSession: t.Optional(t.Ref("session")),
+  })
+  .macro({
+    isSignIn(enabled: boolean) {
+      if (!enabled) return;
+
+      return {
+        beforeHandle({ error, cookie: { token }, store: { session } }) {
+          if (!token.value)
+            return error(401, {
+              success: false,
+              message: "Unauthorized",
+            });
+
+          const username = session[token.value as unknown as number];
+
+          if (!username)
+            return error(401, {
+              success: false,
+              message: "Unauthorized",
+            });
+        },
+      };
+    },
+  });
+
+export const getUserId = new Elysia()
+  .use(userService)
+  .guard({
+    isSignIn: true,
+    cookie: "session",
+  })
+  .resolve(({ store: { session }, cookie: { token } }) => ({
+    username: session[token.value],
+  }))
+  .as("plugin");
+
+export const user = new Elysia({ prefix: "/user" })
+  .use(userService)
+  .put(
+    "/sign-up",
+    async ({ body: { username, password }, store, error }) => {
+      if (store.user[username])
+        return error(400, {
+          success: false,
+          message: "User already exists",
+        });
+
+      store.user[username] = await Bun.password.hash(password);
+
+      return {
+        success: true,
+        message: "User created",
+      };
+    },
+    {
+      body: "signIn",
+    }
+  )
+  .post(
+    "/sign-in",
+    async ({
+      store: { user, session },
+      error,
+      body: { username, password },
+      cookie: { token },
+    }) => {
+      if (
+        !user[username] ||
+        !(await Bun.password.verify(password, user[username]))
+      )
+        return error(400, {
+          success: false,
+          message: "Invalid username or password",
+        });
+
+      const key = crypto.getRandomValues(new Uint32Array(1))[0];
+      session[key] = username;
+      token.value = key;
+
+      return {
+        success: true,
+        message: `Signed in as ${username}`,
+      };
+    },
+    {
+      body: "signIn",
+      cookie: "optionalSession",
+    }
+  )
+  .get(
+    "/sign-out",
+    ({ cookie: { token } }) => {
+      token.remove();
+
+      return {
+        success: true,
+        message: "Signed out",
+      };
+    },
+    {
+      cookie: "optionalSession",
+    }
+  )
+  .use(getUserId)
+  .get("/profile", ({ username }) => ({
+    success: true,
+    username,
+  }));