--- title: "Eslam Genedy (@egenedy97) | Hashnode" description: "Software Developer. Read the latest articles by Eslam Genedy on Hashnode." url: "https://hashnode.com/@egenedy97" --- @egenedy97 # Eslam Genedy @egenedy97 · Joined June 2022 Software Developer ### [Mastering Upcasting and Downcasting in Java: Real-World Scenarios Explained](https://egenedy.hashnode.dev/mastering-upcasting-and-downcasting-in-java-real-world-scenarios-explained?utm_source=hashnode&utm_medium=feed) In the world of Java programming, mastering the concepts of upcasting and downcasting is crucial for writing efficient and flexible code, especially when dealing with inheritance and polymorphism. In this article, we'll explore these concepts with re... 3 min read · [egenedy.hashnode.dev](https://egenedy.hashnode.dev/mastering-upcasting-and-downcasting-in-java-real-world-scenarios-explained?utm_source=hashnode&utm_medium=feed) [May 12, 2024](https://hashnode.com/posts/mastering-upcasting-and-downcasting-in-java-real-world-scenarios-explained/6640ec0f876e1048620c72c0) ### [Navigating the Data Landscape: A Comprehensive Comparison of Blob Storage, Time Series Databases, Graph Databases, and Spatial Databases](https://egenedy.hashnode.dev/navigating-the-data-landscape-a-comprehensive-comparison-of-blob-storage-time-series-databases-graph-databases-and-spatial-databases?utm_source=hashnode&utm_medium=feed) Introduction: In the rapidly evolving world of data management, a diverse range of specialized databases has emerged to address unique requirements for different data types and use cases. Blob Storage, Time Series Databases, Graph Databases, and Spat... 3 min read · [egenedy.hashnode.dev](https://egenedy.hashnode.dev/navigating-the-data-landscape-a-comprehensive-comparison-of-blob-storage-time-series-databases-graph-databases-and-spatial-databases?utm_source=hashnode&utm_medium=feed) [Jun 16, 2023](https://hashnode.com/posts/navigating-the-data-landscape-a-comprehensive-comparison-of-blob-storage-time-series-databases-graph-databases-and-spatial-databases/648be09c9b136619acbc101e) ### [What is SLA , SLO and SLI?](https://egenedy.hashnode.dev/what-is-sla-slo-and-sli?utm_source=hashnode&utm_medium=feed) Availability 3 min read · [egenedy.hashnode.dev](https://egenedy.hashnode.dev/what-is-sla-slo-and-sli?utm_source=hashnode&utm_medium=feed) [Mar 21, 2023](https://hashnode.com/posts/what-is-sla-slo-and-sli/6419f8123456b1ef10f8a60b) ### [Latency and throughput in node.js](https://egenedy.hashnode.dev/latency-and-throughput-in-nodejs?utm_source=hashnode&utm_medium=feed) Latency and throughput are two important concepts that are crucial in understanding the performance of computer systems. Latency refers to the delay between the initiation of a task and the completion of that task, while throughput is the rate at whi... 3 min read · [egenedy.hashnode.dev](https://egenedy.hashnode.dev/latency-and-throughput-in-nodejs?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/latency-and-throughput-in-nodejs/640df87905253c93b49e0ce5) [Mar 12, 2023](https://hashnode.com/posts/latency-and-throughput-in-nodejs/640df87905253c93b49e0ce5) ### [Load Balancer in system design and node.js application .](https://egenedy.hashnode.dev/load-balancer-in-system-design-and-nodejs-application?utm_source=hashnode&utm_medium=feed) system design 7 min read · [egenedy.hashnode.dev](https://egenedy.hashnode.dev/load-balancer-in-system-design-and-nodejs-application?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/load-balancer-in-system-design-and-nodejs-application/63bc79da26375b158cad32c8) [Jan 9, 2023](https://hashnode.com/posts/load-balancer-in-system-design-and-nodejs-application/63bc79da26375b158cad32c8)