aditisharma
6 posts
Jun 05, 2025
2:11 AM
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Platforms like Uber Eats manage massive user bases and real-time transactions by employing sophisticated database optimization strategies. Their goal is to ensure low latency and high availability even during peak demand.
Key techniques include:
? Sharding and Partitioning: Databases are horizontally partitioned into smaller, manageable pieces (shards). A fraction of the data is stored in each shard, which divides the burden among several servers. This prevents a single database instance from becoming a bottleneck.
? Caching Mechanisms: Heavily accessed data, like restaurant menus, user profiles, or popular items, are stored in high-speed in-memory caches (e.g., Redis). This significantly reduces the need to query the main database for every request, improving response times.
? Database Replication and Load Balancing: Multiple copies (replicas) of databases are maintained. Read requests can be distributed among these replicas, while writes typically go to a primary instance. Load balancers ensure traffic is evenly distributed across database servers.
? Optimized Querying and Indexing: Developers write highly optimized database queries and create appropriate indexes on frequently searched columns. This lets the database quickly find and get info without having to look through whole tables.
? Polyglot Persistence / Hybrid Databases: Uber Eats often uses a mix of database technologies. For instance, a relational database (like PostgreSQL or MySQL) might handle structured transaction data, while NoSQL databases (like Apache Cassandra or MongoDB) could manage rapidly changing, unstructured data like real-time driver locations or user preferences, leveraging their horizontal scalability.
? Asynchronous Processing: Non-critical operations are processed asynchronously, preventing them from blocking real-time user interactions.
By combining these strategies, platforms like Uber Eats maintain robust and highly performant database systems capable of handling millions of real-time operations daily.
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Last Edited by aditisharma on Jun 05, 2025 2:11 AM
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