Luis Perez

🇲🇽 👨‍💻 Mexican software developer, creating solutions through code 💻✨

[Sripathi Teja @sripathiteja4]

Learn AI for free directly from top companies.

1 - Anthropic:
https://t.co/9EduZDcj9Z

2 - Google:
https://t.co/99Czpf5KKs

3 - Meta:
https://t.co/dBBKUQueyj

4 - NVIDIA:
https://t.co/8jpLrGJzxy

5 - Microsoft:
https://t.co/wmK2R8oilJ

6 - OpenAI:
https://t.co/ifQ8cEx0Qt

7 - IBM:
https://t.co/QFGI0v8Cqa

8 - AWS:
https://t.co/nati5WaARH

9 - https://t.co/0vjKn1mtg2:
https://t.co/bOlcLMfgyd

10 - Hugging Face:
https://t.co/bmSTfzCvB4

Comment "Learning" if you find this helpful.

Repost so others can take help.

Must bookmark for future reference.

[Luis Perez @luisPerezCont]

https://t.co/uTw89UGivH

[Luis Perez @luisPerezCont]

@powerhdeleon Es verdad.

[Luis Perez @luisPerezCont]

Free labs

https://t.co/YX4BFwAJUX. .

[Luis Perez @luisPerezCont]

@powerhdeleon Este mundo siempre ha sido así; ahora, más con la inteligencia artificial, pululan los expertos. Qué triste, deveras.

[Luis Perez @luisPerezCont]

@5eniorDeveloper 😅

[MentalAtlasX @AtlasMentalXX]

@JuanchoMxx Tengo varias de esas

[Serudda @serudda]

¿Alguna vez Claude te dijo que tu idea es una mierda?

No.

Y el MIT y Penn State demostraron por qué.

[Vaughtton @Vaughtton]

He grabado un tutorial de 30 minutos en el que te cuento cómo pasar de una idea a una web con diseño profesional para un negocio local usando Pencil y Claude Code.

Verás cómo diseñar, desarrollar y publicarlo en producción con Vercel. Échale un vistazo 👇

[Luis Perez @luisPerezCont]

@5eniorDeveloper

[Dhanian 🗯️ @e_opore]

𝗛𝗼𝘄 𝘁𝗼 𝗗𝗲𝘀𝗶𝗴𝗻 𝗮 𝗥𝗲𝗮𝗹-𝗧𝗶𝗺𝗲 𝗠𝗲𝘀𝘀𝗮𝗴𝗶𝗻𝗴 𝗦𝘆𝘀𝘁𝗲𝗺 (𝗪𝗵𝗮𝘁𝘀𝗔𝗽𝗽)

Design a 𝗹𝗼𝘄-𝗹𝗮𝘁𝗲𝗻𝗰𝘆, 𝗿𝗲𝗹𝗶𝗮𝗯𝗹𝗲, 𝗲𝗻𝗱-𝘁𝗼-𝗲𝗻𝗱 𝗲𝗻𝗰𝗿𝘆𝗽𝘁𝗲𝗱 𝘀𝘆𝘀𝘁𝗲𝗺 that can deliver billions of messages instantly between users worldwide, handling both online delivery and offline queuing with guaranteed delivery receipts.

The system is built on a 𝗵𝗶𝗴𝗵𝗹𝘆 𝗱𝗶𝘀𝘁𝗿𝗶𝗯𝘂𝘁𝗲𝗱, 𝗺𝗶𝗰𝗿𝗼𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 that separates connection management, message routing, media handling, and storage. The core challenge is maintaining millions of persistent, concurrent connections to mobile devices that frequently change networks.

When a user sends a message, it is first 𝗲𝗻𝗰𝗿𝘆𝗽𝘁𝗲𝗱 𝗼𝗻-𝗱𝗲𝘃𝗶𝗰𝗲 using the Signal Protocol. The encrypted payload is sent to a WebSocket Server that maintains the persistent connection. This server forwards the message to a Message Router, which looks up the recipient's current connection server from a Presence Service and delivers it. If the recipient is offline, the message is stored in a durable, sharded Message Queue until they reconnect.

The platform's core consists of 𝘀𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘇𝗲𝗱, 𝗵𝗶𝗴𝗵𝗹𝘆 𝗮𝘃𝗮𝗶𝗹𝗮𝗯𝗹𝗲 𝘀𝗲𝗿𝘃𝗶𝗰𝗲𝘀:
• Connection Manager: Handles persistent WebSocket connections, manages heartbeats, and detects offline status.
• Message Router: The central nervous system that routes messages between users and to groups.
• Presence Service: Tracks which connection server each online user is connected to.
• Media Proxy: Handles upload, encryption, storage, and download of images, videos, and documents.
• Group Service: Manages group membership, permissions, and fan-out logic for group messages.

Behind the scenes, the system relies on 𝗮𝘀𝘆𝗻𝗰𝗵𝗿𝗼𝗻𝗼𝘂𝘀 𝗽𝗿𝗼𝗰𝗲𝘀𝘀𝗶𝗻𝗴 𝗳𝗼𝗿 𝗿𝗲𝗹𝗶𝗮𝗯𝗶𝗹𝗶𝘁𝘮. All message events are written to a persistent log (like Apache Kafka). This log enables features like multi-device sync, ensures no message is lost during failures, and feeds data pipelines for analytics and anti-abuse systems.

This immense scale requires an 𝗮𝗴𝗴𝗿𝗲𝘀𝘀𝗶𝘃𝗲 𝗰𝗮𝗰𝗵𝗶𝗻𝗴 𝗮𝗻𝗱 𝘀𝗵𝗮𝗿𝗱𝗶𝗻𝗴 𝘀𝘁𝗿𝗮𝘁𝗲𝗴𝘆. Presence data is cached in-memory across regions. User messages are sharded by user ID across distributed databases to spread the write load.

𝗖𝗿𝗶𝘁𝗶𝗰𝗮𝗹 𝗗𝗲𝘀𝗶𝗴𝗻 𝗣𝗿𝗶𝗻𝗰𝗶𝗽𝗹𝗲𝘀: 𝟭) 𝗣𝗲𝗿𝘀𝗶𝘀𝘁𝗲𝗻𝘁 𝗖𝗼𝗻𝗻𝗲𝗰𝘁𝗶𝗼𝗻𝘀 for real-time push, ���) 𝗘𝗻𝗱-𝘁𝗼-𝗘𝗻𝗱 𝗘𝗻𝗰𝗿𝘆𝗽𝘁𝗶𝗼𝗻 by default, 𝟯) 𝗥𝗲𝗹𝗶𝗮𝗯𝗹𝗲 𝗤𝘂𝗲𝘂𝗶𝗻𝗴 for offline delivery, 𝟰) 𝗛𝗼𝗿𝗶𝘇𝗼𝗻𝘁𝗮𝗹 𝗦𝗵𝗮𝗿𝗱𝗶𝗻𝗴 of all stateful services.

𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗔𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗦𝘁𝗮𝗰𝗸:
• 𝗣𝗿𝗼𝘁𝗼𝗰𝗼𝗹𝘀/𝗖𝗼𝗻𝗻𝗲𝗰𝘁𝗶𝗼𝗻: MQTT, XMPP, custom WebSocket protocol
• 𝗕𝗮𝗰𝗸𝗲𝗻𝗱 𝗦𝗲𝗿𝘃𝗶𝗰𝗲𝘀: Erlang/OTP (famous for concurrency), Go, Java, C++
• 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀: RocksDB, Cassandra, HBase (for message history), Redis (for presence/session cache)
• 𝗠𝗲𝘀𝘀𝗮𝗴𝗲 𝗤𝘂𝗲𝘂𝗲𝘀: Apache Kafka, RabbitMQ
• 𝗠𝗲𝗱𝗶𝗮 𝗦𝘁𝗼𝗿𝗮𝗴𝗲: Object storage (S3, Google Cloud Storage) with CDN
• 𝗘𝗻𝗰𝗿𝘆𝗽𝘁𝗶𝗼𝗻: Signal Protocol library (Libsignal)
• 𝗣𝘂𝘀𝗵 𝗡𝗼𝘁𝗶𝗳𝗶𝗰𝗮𝘁𝗶𝗼𝗻𝘀: Apple Push Notification Service (APNs), Firebase Cloud Messaging (FCM)

👉 Learn more in the System Design Handbook: https://t.co/aE1KNO717x
👉 Grab the System Design Case Studies Handbook: https://t.co/hccIPgdx77

[Vaughtton @Vaughtton]

He grabado un tutorial de 1 hora de cómo dar tus primeros pasos con Claude Code aunque no sepas programar ni hayas tocado la terminal.

Te cuento consejos, proyectos reales que hemos hecho y cosas avanzadas.

Échale un vistazo 👇

[Luis Perez @luisPerezCont]

@5eniorDeveloper 😔 Perdón, pero es mi forma de motivarme un poquitín más.

[Luis Perez @luisPerezCont]

@CatadorFutMx @MameShitPst mete tu pie detrás de la pierna contraria al lado que te quieren tirar, antes de que te levanten más. También funciona si te quieren tirar hacia atrás. Tienes que ser rápido. Después, no intentar soltar sus manos; en lugar de eso, codazos a la cara buscando nariz u ojos.

[Luis Perez @luisPerezCont]

https://t.co/c8XUuZnfe6 para test API

[Luis Perez @luisPerezCont]

Roadmaps -> https://t.co/ve5EBENm7J. .

[Miguel Ángel Durán @midudev]

La gente busca MAL trabajo en Internet.
3 Trucazos para hacerlo bien y no perder tiempo ↓

[Fazt @FaztTech]

Hace unos días hice un listado de que temas aprender si se considera ser un desarrollador web en 2026. Les dejo los apuntes y también el video donde explico cada cosa😄 https://t.co/RUiunJvpo8

[💜𝗚𝗜𝗠 | Ai and Web Developer 💜 @Techk_e4ma]

THREAD 🧵: Big Project Ideas for Beginners + What You’ll Learn From Each One