--- title: "Kaushik King (@kaushik-pycoder) | Hashnode" description: "I am new developer interested in sharing my knowledge i am good at automations, making large systems. Read the latest articles by Kaushik King on Hashnode." url: "https://hashnode.com/@kaushik-pycoder" --- @kaushik-pycoder # Kaushik King @kaushik-pycoder · vizianagaram,India · Joined March 2026 I am new developer interested in sharing my knowledge i am good at automations, making large systems [Website](https://logicandlegacy.blogspot.com/) ### [FastAPI Dependency Injection: Real-World Architecture & Scoped State (2026)](https://logicandlegacy.hashnode.dev/fastapi-dependency-injection-real-world-architecture-scoped-state-2026?utm_source=hashnode&utm_medium=feed) Dependency Injection: Architecting Predictable Backends with FastAPI We've all encountered that sprawling codebase where every function signature is a lengthy list of parameters. Picture a microservice where database sessions, logger instances, and u... 5 min read · [logicandlegacy.hashnode.dev](https://logicandlegacy.hashnode.dev/fastapi-dependency-injection-real-world-architecture-scoped-state-2026?utm_source=hashnode&utm_medium=feed) [May 11](https://hashnode.com/posts/fastapi-dependency-injection-real-world-architecture-scoped-state-2026/6a01e6eaa40cf84116a5dc44) ### [FastAPI WebSockets: Async Connections, Scaling, The Multi-Worker Nightmare (2026)](https://logicandlegacy.hashnode.dev/fastapi-websockets-async-connections-scaling-the-multi-worker-nightmare-2026?utm_source=hashnode&utm_medium=feed) FastAPI WebSockets: Navigating State, Authentication, and Multi-Worker Scaling FastAPI's WebSocket implementation often appears straightforward, mirroring the ease of building standard HTTP endpoints. This apparent simplicity, however, frequently con... 6 min read · [logicandlegacy.hashnode.dev](https://logicandlegacy.hashnode.dev/fastapi-websockets-async-connections-scaling-the-multi-worker-nightmare-2026?utm_source=hashnode&utm_medium=feed) [May 10](https://hashnode.com/posts/fastapi-websockets-async-connections-scaling-the-multi-worker-nightmare-2026/6a00942820d8c141ccfcba18) ### [The Offset Massacre — Why Cursor Pagination is Mandatory (2026)](https://logicandlegacy.hashnode.dev/the-offset-massacre-why-cursor-pagination-is-mandatory-2026?utm_source=hashnode&utm_medium=feed) Efficient Pagination: Moving Beyond OFFSET for Scalable Data Retrieval Many applications rely on pagination to display large datasets, from product catalogs to social media feeds. While the OFFSET and LIMIT clauses are commonly taught for this purpos... 5 min read · [logicandlegacy.hashnode.dev](https://logicandlegacy.hashnode.dev/the-offset-massacre-why-cursor-pagination-is-mandatory-2026?utm_source=hashnode&utm_medium=feed) [May 9](https://hashnode.com/posts/the-offset-massacre-why-cursor-pagination-is-mandatory-2026/69ff4b4177ade4b7de106c0f) ### [Database Connection Pooling — Why Your Serverless APIs Kill Postgres (2026)](https://logicandlegacy.hashnode.dev/database-connection-pooling-why-your-serverless-apis-kill-postgres-2026?utm_source=hashnode&utm_medium=feed) Optimizing Database Connections for Scalability When building high-traffic applications, it's easy to overlook the importance of managing database connections. A single misstep can lead to catastrophic consequences, such as crashing the database or o... 3 min read · [logicandlegacy.hashnode.dev](https://logicandlegacy.hashnode.dev/database-connection-pooling-why-your-serverless-apis-kill-postgres-2026?utm_source=hashnode&utm_medium=feed) [May 8](https://hashnode.com/posts/database-connection-pooling-why-your-serverless-apis-kill-postgres-2026/69fd9b188737c2fa9c65ce3e) ### [Elasticsearch & Inverted Indices — The Death of SQL ILIKE (2026)](https://logicandlegacy.hashnode.dev/elasticsearch-inverted-indices-the-death-of-sql-ilike-2026?utm_source=hashnode&utm_medium=feed) Rethinking Search: From SQL to Elasticsearch When tasked with adding a search bar to an application, many developers instinctively turn to their trusty SQL database. However, this approach can lead to performance issues and scalability problems. The ... 2 min read · [logicandlegacy.hashnode.dev](https://logicandlegacy.hashnode.dev/elasticsearch-inverted-indices-the-death-of-sql-ilike-2026?utm_source=hashnode&utm_medium=feed) [May 7](https://hashnode.com/posts/elasticsearch-inverted-indices-the-death-of-sql-ilike-2026/69fc9fae14a2145179e3d238)