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URL: https://encore.dev/
Submission: On December 14 via api from FR — Scanned from FR

Form analysis 1 forms found in the DOM

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Text Content

🚀 Launch Week is live right now!


ENCORE.TS / ENCORE.GO
OPEN SOURCE TYPESCRIPT BACKEND FRAMEWORK
FOR ROBUST TYPE-SAFE APPLICATIONS

 * ★8k
 * 70+ contributors
 * 0 npm dependencies

1. Install Encore
macOS
Windows
Linux
Brew
$ curl -L https://encore.dev/install.sh | bash
2. Create tutorial app
$ encore app create --example=ts/introduction
3. Run locally
$ encore run

Loved by pioneering engineering teams in fast-moving startups and scaleups
See what teams are building with Encore →

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LEAVE THE MAZE OF COMPLEXITY BEHIND

Leave the maze of complexity behind


9X FASTER THAN EXPRESS.JS
3X FASTER THAN ELYSIA & HONO


REQUESTS/SEC

Without validation
With schema validation
121,005
107,018
Encore
v1.38.7
82,617
35,124
Elysia (+ TypeBox)
v1.1.16 / v0.33.12
71,202
33,150
Hono (+ TypeBox)
v4.6.3 / v0.33.12
62,207
48,397
Fastify (+ Ajv)
v4.27.0 / v8.16.0
15,707
11,878
Express (+ Zod)
v4.19.2 / v3.23.8
View benchmarks →
Replace Express.js with Encore.ts for 9x faster APIs.
Try it →


RUST-POWERED PERFORMANCE AND TYPE-SAFETY IN NODE.JS

Performance: Multi-threaded request handling and validation in Rust


Compatibility: Runs as a native Node.js process for full ecosystem compatibility


Type-Safety: Automatic request validation in Rust for runtime type-safety

Wrap your APIs with Encore.ts for improved performance and type-safety.
Try it →



USE FUNCTIONS AS APIS

Encore.ts generates the communication boilerplate and ensures full type-safety.

Defining APIsCalling APIsDefining microservices
Defining APIsCalling APIsDefining microservices
// Use the api function to create endpoints.


import { api } from "encore.dev/api"; // Wrap regular functions with { api } to
expose them as API endpointsexport const ping = api( { method: "GET", path:
"/hello/:name", expose: true }, // API options async (params: { name: string }):
Promise<{ message: string }> => { return {message: `Hello, ${params.name}`}; });
Learn how to define APIs in Encore with this introduction app:
$ encore app create --example=ts/introduction


INTEGRATE INFRASTRUCTURE AS
TYPE-SAFE OBJECTS IN APPLICATION CODE

Encore makes your infrastructure type-aware and removes the need for connection
strings and other boilerplate in your application.

DatabasePub/SubObject StorageCron JobSecretsCache
DatabasePub/SubObject StorageCron JobSecretsCache
// Create a PostgreSQL database in one line of code


import { SQLDatabase } from "encore.dev/storage/sqldb"; const db = new
SQLDatabase("userdb", {migrations: "./migrations"});// ... use db.query to query
the database.
Deploy anywhere that supports Docker images using Encore's Open Source tools.
See how →
Fully automate infra and DevOps in your cloud on AWS and GCP with Encore Cloud.
Learn more →


WORKS WITH YOUR EXISTING STACK

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AUTOMATED LOCAL INFRASTRUCTURE AND BUILT-IN DEVELOPMENT DASHBOARD

Try the local development experience:
$ encore app create --example=ts/hello-world


AUTOMATED LOCAL INFRA WITH HOT RELOAD

encore run starts your app and all infrastructure. Forget YAML, Docker Compose,
and the usual headaches.


SERVICE CATALOG & API EXPLORER

Automatically updated Service Catalog with full API documentation, and an API
Explorer for testing your APIs.


TRACING & LOGGING

The local dashboard includes tracing for API requests, database calls, and
Pub/Sub messages.


ARCHITECTURE DIAGRAMS

Automatic architecture diagrams give you a real-time overview of your
application.


FULL EXAMPLE PROJECT

1 import { api } from "encore.dev/api";
2 import { Subscription, Topic } from "encore.dev/pubsub";
3 import { SQLDatabase } from "encore.dev/storage/sqldb";
4 import { Site, SiteAddedTopic } from "../site/site";
5 import { ping } from "./ping";
6 import { site } from "~encore/clients";
7 import { CronJob } from "encore.dev/cron"; // Check checks a single site.
8 
9 // Check checks a single site.

10 export const check = api(
11   { expose: true, method: "POST", path: "/check/:siteID" },
12   async (p: { siteID: number }): Promise<{ up: boolean }> => {

13     const s = await site.get({ id: p.siteID });
14     return doCheck(s);
15   },
16 );
17 
18 // CheckAll checks all sites.
19 export const checkAll = api(

20   { expose: true, method: "POST", path: "/check-all" },
21   async (): Promise<void> => {
22     const sites = await site.list();
23     await Promise.all(sites.sites.map(doCheck));
24   },
25 );
26 
27 // Defines a Cron Job to check all tracked sites every hour.
28 // Learn more: https://encore.dev/docs/ts/primitives/cron-jobs
29 // Send a welcome email to everyone who signed up in the last two hours.

30 const cronJob = new CronJob("check-all", {
31   title: "Check all sites",
32   every: "1h",
33   endpoint: checkAll,
34 });
35 
36 async function doCheck(site: Site): Promise<{ up: boolean }> {
37   const { up } = await ping({ url: site.url });
38 
39   // Publish a Pub/Sub message if the site transitions
40   // from up->down or from down->up.
41   const wasUp = await getPreviousMeasurement(site.id);
42   if (up !== wasUp) {

43     await TransitionTopic.publish({ site, up });
44   }
45 
46   await MonitorDB.exec`
47       INSERT INTO checks (site_id, up, checked_at)
48       VALUES (${site.id}, ${up}, NOW())
49   `;
50   return { up };
51 }
52 
53 // getPreviousMeasurement reports whether the given site was
54 // up or down in the previous measurement.
55 async function getPreviousMeasurement(siteID: number): Promise<boolean> {
56   const row = await MonitorDB.queryRow`

57       SELECT up
58       FROM checks
59       WHERE site_id = ${siteID}
60       ORDER BY checked_at DESC
61       LIMIT 1
62   `;
63   return row?.up ?? true;
64 }
65 
66 // Define a database named 'monitor', using the database migrations
67 // in the "./migrations" folder. Encore automatically provisions,
68 // migrates, and connects to the database.

69 export const MonitorDB = new SQLDatabase("monitor", {
70   migrations: "./migrations",
71 });
72 

73 const _ = new Subscription(SiteAddedTopic, "check-site", {
74   handler: doCheck,
75 });
76 
77 // TransitionEvent describes a transition of a monitored site
78 // from up->down or from down->up.
79 export interface TransitionEvent {
80   site: Site; // Site is the monitored site in question.
81   up: boolean; // Up specifies whether the site is now up or down (the new value).
82 }
83 
84 // TransitionTopic is a pubsub topic with transition events for when a monitored site
85 // transitions from up->down or from down->up.

86 export const TransitionTopic = new Topic<TransitionEvent>("uptime-transition", {
87   deliveryGuarantee: "at-least-once",
88 });
89 

Project

frontend
monitor
migrations
1_create_tables.up.sql
check.test.ts
check.ts
encore.service.ts
ping.test.ts
ping.ts
status.ts
site
migrations
1_create_tables.up.sql
encore.service.ts
site.ts
slack
encore.service.ts
slack.ts
Encore
encore.app
package.json
tsconfig.json
vite.config.ts

Open on
Clone this example
$ encore app create --example=ts/uptime


JOIN A GROWING COMMUNITY OF PIONEERING DEVELOPERS

Encore's Open Source Community is the driving force behind the project.
It's full of friendly developers supporting the project with feedback, bug
fixes, and wisdom.


Discord

Come hang out with other friendly Encore developers.

1k+ Members

Join →
GitHub

Star and contribute to the project on GitHub.

8k Stars / 70+ Contributors

Star →
Twitter

Follow along on Twitter / X.

Follow →
YouTube

Sit back and enjoy the videos on YouTube.

Watch →
Less complexity creates more possibilityLess complexity creates more
possibilityLess complexity creates more possibilityLess complexity creates more
possibilityLess complexity creates more possibilityLess complexity creates more
possibilityLess complexity creates more possibilityLess complexity creates more
possibilityLess complexity creates more possibilityLess complexity creates more
possibilityLess complexity creates more possibilityLess complexity creates more
possibility


START BUILDING YOUR FIRST ENCORE.TS APP

URL Shortener
A URL shortener with a REST API and PostgreSQL database.

Build it
Slack Bot
Create a Cowsay Slack Bot that integrates with the Slack API.

Build it
Event-Driven System
Create an event-driven uptime monitoring system with this template.

Build it
OpenAI Chat Bot
Create bots powered by OpenAI and integrate with Discord and Slack.

Build it

See all the Open Source Example Apps


FEATURES

Tracing
Type-safe API schemas
Streaming APIs
CORS handling
Structured logging
Authentication
API Client generation
Pub/Sub integrations
Object Storage integrations
Secrets management
Database integrations
Automatic local infrastructure
Architecture Diagrams
Local Development Dashboard
Service Catalog
TypeScript native
Automated testing
Debugging
Error handling
Multithreading
Request validation


GET STARTED NOW

1. Install Encore
macOS
Windows
Linux
Brew
$ curl -L https://encore.dev/install.sh | bash
2. Create tutorial app
$ encore app create --example=ts/introduction
3. Run locally
$ encore run
// Stay in touch?

Get Updates


Get Updates
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