#microservices #architecture

Here’s a breakdown of the WhatsApp Message Flow:

• Your message is encrypted instantly and sent to WhatsApp’s servers.

• The server checks if the recipient is online or offline.

• If online → message is delivered and synced across devices.

• If offline → message is queued and delivered once they’re back online.

• Read receipts are sent back when the user reads your message.

• And yes — all this happens within seconds, securely and efficiently.

Let's Explore the fascinating world of WhatsApp's architecture, breaking down the key components that make it all work seamlessly.

𝐋𝐨𝐜𝐚𝐥 𝐒𝐐𝐋𝐢𝐭𝐞 𝐃𝐁: Where your messages find a temporary home on your device.

𝐌𝐨𝐛𝐢𝐥𝐞 𝐔𝐬𝐞𝐫𝐬: Millions of users, each with their unique experience.

𝐂𝐮𝐬𝐭𝐨𝐦 𝐄𝐣𝐣𝐚𝐛𝐞𝐫𝐝 𝐒𝐞𝐫𝐯𝐞𝐫 𝐂𝐥𝐮𝐬𝐭𝐞𝐫: The powerhouse handling real-time communication.

𝐘𝐀𝐖𝐒 𝐒𝐞𝐫𝐯𝐞𝐫: Ensuring smooth interactions between users and servers.

𝐌𝐧𝐞𝐬𝐢𝐚 𝐃𝐁 𝐂𝐥𝐮𝐬𝐭𝐞𝐫, 𝐌𝐲𝐒𝐐𝐋, or 𝐏𝐨𝐬𝐭𝐠𝐫𝐞𝐬: Managing vast amounts of user data securely.

𝐑𝐢𝐚𝐤: The backbone for storage and quick retrieval of media and data.

𝐗𝐌𝐏𝐏 & 𝐇𝐓𝐓𝐏: Protocols enabling instant messaging and data transfer.

𝐆𝐂𝐌 / 𝐀𝐏𝐍𝐒: Pushing notifications to keep you updated, no matter the platform.

𝐖𝐫𝐢𝐭𝐞 𝐎𝐧𝐥𝐲, 𝐌𝐞𝐬𝐬𝐚𝐠𝐞 𝐀𝐫𝐜𝐡𝐢𝐯𝐞, 𝐎𝐟𝐟𝐥𝐢𝐧𝐞 𝐔𝐬𝐞𝐫𝐬: Features shaping your messaging experience.

𝐌𝐞𝐝𝐢𝐚, 𝐃𝐚𝐭𝐚, 𝐏𝐫𝐨𝐟𝐢𝐥𝐞, 𝐂𝐨𝐧𝐭𝐚𝐜𝐭𝐬: How your media and crucial information are managed.

𝐇𝐓𝐓𝐏: The bridge for web-based interactions with the WhatsApp platform.

#whatsapp #systemdesign #architecture #

#whatsapp '#howwhatsappworks

𝐖𝐡𝐚𝐭 𝐫𝐞𝐚𝐥𝐥𝐲 𝐡𝐚𝐩𝐩𝐞𝐧𝐬 𝐰𝐡𝐞𝐧 𝐲𝐨𝐮 𝐡𝐢𝐭 𝐒𝐞𝐧𝐝 𝐨𝐧 𝐖𝐡𝐚𝐭𝐬𝐀𝐩𝐩?

• It feels instant—but behind the scenes, there's a beautifully orchestrated system at work.

• Here’s a breakdown of the WhatsApp Message Flow:

• Your message is encrypted instantly and sent to WhatsApp’s servers.

• The server checks if the recipient is online or offline.

• If online → message is delivered and synced across devices.

• If offline → message is queued and delivered once they’re back online.

• Read receipts are sent back when the user reads your message.

• And yes — all this happens within seconds, securely and efficiently.

• I visualized the entire architecture in this diagram to simplify how it works. Whether you're into system design, distributed systems, or just curious about real-time messaging, this is a great example to learn from.

• *There is a typo in step 4 it should be online

These patterns are crucial in designing robust software systems.

→ Event Driven: This pattern allows different components to communicate through events.

→ Monolithic: All parts of the application are combined into a single unit, making it easier to manage but harder to scale.

→ Microservices: This approach breaks down the application into smaller, independent services, enhancing flexibility and scaling.

→ MVC (Model-View-Controller): This pattern separates data processing, user interface, and user input to make systems more manageable.

→ Master-Slave: This method distributes tasks among servers, improving performance and reliability.

#SoftwareArchitecturalPatterns #SoftwarePatterns #architecture

1 – It all starts with CI/CD pipelines that deploy code to the server instances. Tools like Jenkins and GitHub help over here.

2 – The user requests originate from the web browser. After DNS resolution, the requests reach the app servers. 3 – Load balancers and reverse proxies (such as Nginx & HAProxy) distribute user requests evenly across the web application servers.

4 – The requests can also be served by a Content Delivery Network (CDN).

5 – The web app communicates with backend services via APIs.

6 – The backend services interact with database servers or distributed caches to provide the data.

7 – Resource-intensive and long-running tasks are sent to job workers using a job queue.

8 – The full-text search service supports the search functionality. Tools like Elasticsearch and Apache Solr can help here.

9 – Monitoring tools (such as Sentry, Grafana, and Prometheus) store logs and help analyze data to ensure everything works fine.

10 – In case of issues, alerting services notify developers through platforms like Slack for quick resolution.

#WebApp #architecture #WebApplication

REST: Sends HTTP requests from client to server and back. Widely used over HTTP.

GraphQL: Lets clients pull specific data in one query. Offers more control than REST.

WebSocket: Keeps a live connection for real-time, two-way communication.

gRPC: Uses Protocol Buffers for efficient messaging, often over HTTP/2.

MQTT: Lightweight protocol for IoT, sends messages via a broker.

Serverless: Executes APIs on demand, no server management needed. Perfect for cloud.

#APIs #architecture

#architecture #patterns #ArchtecturalPatterns

#API #APIs #Architecture #REST #SOAP #GraphQL #WebSocket #Webhook

Load Balancer:

This distributes incoming traffic across multiple backend services.

CDN (Content Delivery Network):

CDN is a group of geographically distributed servers that hold static content for faster delivery. The clients look for content in CDN first, then progress to backend services.

API Gateway:

This handles incoming requests and routes them to the relevant services. It talks to the identity provider and service discovery.

Identity Provider:

This handles authentication and authorization for users.

Service Registry & Discovery:

Microservice registration and discovery happen in this component, and the API gateway looks for relevant services in this component to talk to.

Management:

This component is responsible for monitoring the services.

Microservices:

Microservices are designed and deployed in different domains. Each domain has its database.

#microservice #architecture

• Event-Driven Architecture: Components communicate through events, ideal for real-time processing.
• Layered Architecture: Organizes the system into layers, each with a specific responsibility, promoting separation of concerns.
• Monolithic Architecture: All functionalities are combined into a single application, suitable for simpler, smaller applications.
• Microservice Architecture: System is divided into independent services, each responsible for a specific function, allowing for scalability and flexibility.
• MVC (Model-View-Controller): Separates the application into three interconnected components to separate internal representations of information from the ways that information is presented and accepted.
• Master-Slave Architecture: One component (master) controls one or more other components (slaves), commonly used in database replication.

Benefits

• Reusability: Patterns can be reused across different projects, saving time and effort.
• Best Practices: Incorporate industry best practices, reducing common pitfalls.
• Communication: Provide a common language for developers, improving communication and understanding

#architecture #DesignPatterns

#architecture #DesignPatterns