What is Facebook's architecture?
As of my knowledge cutoff in September 2021, Facebook's architecture is a complex and distributed system that consists of various components and technologies working together to provide its services. While I can provide a general overview, please note that Facebook's architecture may have evolved or changed since then.
2. Load Balancers:
Facebook employs load balancers to distribute incoming traffic across multiple servers. This helps in handling large user volumes and ensures high availability and scalability.
3. Web Servers:
Facebook uses several web servers, such as Apache or Nginx, to handle user requests and serve dynamic content. These servers interact with various backend services to retrieve and process the requested data.
To enhance performance and reduce latency, Facebook employs caching extensively. They utilize a distributed caching system, like Memcached, to store frequently accessed data closer to the users, minimizing the need for repeated database queries.
5. Backend Services:
Facebook's backend services handle different functionalities such as user authentication, news feed generation, messaging, notifications, and more. These services are distributed across multiple servers and are designed to be highly available and fault-tolerant.
Facebook employs various types of databases to store and manage data. They use traditional relational databases like MySQL for structured data storage. Additionally, they utilize NoSQL databases like Cassandra for handling large amounts of unstructured data with high scalability requirements.
7. Big Data Infrastructure:
Facebook deals with an enormous amount of data, and they have developed their own big data infrastructure called Facebook Data Warehouse (FBDW). It includes technologies like Apache Hadoop, Hive, Presto, and others to process and analyze vast volumes of data.
8. Messaging Infrastructure:
Facebook's messaging platform relies on a customized messaging infrastructure. It utilizes technologies like Apache Kafka for high-throughput message handling and Apache HBase for real-time storage and retrieval of messages.
9. Infrastructure Management:
To manage their vast infrastructure, Facebook uses various tools and frameworks, including their own data center management system called Open Compute Project (OCP). OCP focuses on optimizing hardware efficiency, power consumption, and managing large-scale deployments.
It's worth mentioning that Facebook's architecture is continuously evolving, and they are known for their innovative approaches to scalability, performance, and user experience. Therefore, it's essential to consult up-to-date resources or official channels for the most accurate and current information on Facebook's architecture.