diff --git a/README.md b/README.md
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+++ b/README.md
@@ -5,7 +5,6 @@ This repository contains resources to learn System Design concepts and prepare f
 
 - [Content Delivery Network (CDN)](https://www.cloudflare.com/learning/cdn/what-is-a-cdn/)
 - [Caching](https://medium.com/must-know-computer-science/system-design-caching-acbd1b02ca01)
-- [Caching Patterns](https://newsletter.systemdesign.one/p/caching-patterns)
 - [Distributed Caching](https://redis.com/glossary/distributed-caching/)
 - [Latency vs Throughput](https://aws.amazon.com/compare/the-difference-between-throughput-and-latency/)
 - [CAP Theorem](https://www.bmc.com/blogs/cap-theorem/)
@@ -37,7 +36,11 @@ This repository contains resources to learn System Design concepts and prepare f
 - [Bloom Filters](https://www.enjoyalgorithms.com/blog/bloom-filter)
 - [Consensus Algorithms](https://medium.com/@sourabhatta1819/consensus-in-distributed-system-ac79f8ba2b8c)
 - [Gossip Protocol](http://highscalability.com/blog/2023/7/16/gossip-protocol-explained.html)
+- [Bloom Filters](https://www.enjoyalgorithms.com/blog/bloom-filter)
 - [API Gateway](https://www.nginx.com/learn/api-gateway/)
+- [Serverless Architecture](https://www.datadoghq.com/knowledge-center/serverless-architecture/)
+- [Service Discovery](https://www.nginx.com/blog/service-discovery-in-a-microservices-architecture/)
+- [Disaster Recovery](https://cloud.google.com/learn/what-is-disaster-recovery)
 - [Distributed Locking](https://martin.kleppmann.com/2016/02/08/how-to-do-distributed-locking.html)
 - [Distributed Tracing](https://www.dynatrace.com/news/blog/what-is-distributed-tracing/)
 - [Checksum](https://www.lifewire.com/what-does-checksum-mean-2625825)