Remove some dead links

README.md

@@ -160,7 +160,6 @@ An updated and organized reading list for illustrating the patterns of scalable,
         * [A/B Tests on Hosting Infrastructure (CDNs) at Deliveroo](https://deliveroo.engineering/2016/09/19/ab-testing-cdns.html)
         * [HAProxy with Kubernetes for User-facing Traffic at SoundCloud](https://developers.soundcloud.com/blog/how-soundcloud-uses-haproxy-with-kubernetes-for-user-facing-traffic)
         * [Bandaid: Service Proxy at Dropbox](https://blogs.dropbox.com/tech/2018/03/meet-bandaid-the-dropbox-service-proxy/)
-        * [CDN in LIVE's Encoder Layer at LINE](https://engineering.linecorp.com/en/blog/detail/230)
 		* [Service Workers at Slack](https://slack.engineering/service-workers-at-slack-our-quest-for-faster-boot-times-and-offline-support-3492cf79c88)
 		* [CDN Services at Spotify](https://labs.spotify.com/2020/02/24/how-spotify-aligned-cdn-services-for-a-lightning-fast-streaming-experience/)
 * [Distributed Locking](https://martin.kleppmann.com/2016/02/08/how-to-do-distributed-locking.html)
@@ -284,7 +283,6 @@ An updated and organized reading list for illustrating the patterns of scalable,
 		* [Pulsar: Pub-Sub Messaging at Scale at Yahoo](https://yahooeng.tumblr.com/post/150078336821/open-sourcing-pulsar-pub-sub-messaging-at-scale)
 		* [Wormhole: Pub-Sub System at Facebook](https://code.facebook.com/posts/188966771280871/wormhole-pub-sub-system-moving-data-through-space-and-time/)
 		* [MemQ: Cloud Native Pub-Sub System at Pinterest](https://medium.com/pinterest-engineering/memq-an-efficient-scalable-cloud-native-pubsub-system-4402695dd4e7)
-		* [Pub-Sub in Chatting Architecture at LINE](https://engineering.linecorp.com/en/blog/detail/85)
 		* [Pub-Sub in Microservices at Netflix](https://medium.com/netflix-techblog/how-netflix-microservices-tackle-dataset-pub-sub-4a068adcc9a)
 	* [Kafka - Message Broker](https://martin.kleppmann.com/papers/kafka-debull15.pdf)	
 		* [Kafka at LinkedIn](https://engineering.linkedin.com/kafka/running-kafka-scale)
@@ -580,8 +578,6 @@ An updated and organized reading list for illustrating the patterns of scalable,
 * [Circuit Breaker](https://martinfowler.com/bliki/CircuitBreaker.html)
 	* [Circuit Breaking in Distributed Systems](https://www.infoq.com/presentations/circuit-breaking-distributed-systems)
 	* [Circuit Breaker for Scaling Containers](https://f5.com/about-us/blog/articles/the-art-of-scaling-containers-circuit-breakers-28919)
-	* [Circuit Breakers for Distributed Services at LINE](https://engineering.linecorp.com/en/blog/detail/76)
-	* [Applying Circuit Breaker to Channel Gateway at LINE](https://engineering.linecorp.com/en/blog/detail/78)
 	* [Lessons in Resilience at SoundCloud](https://developers.soundcloud.com/blog/lessons-in-resilience-at-SoundCloud)
 	* [Protector: Circuit Breaker for Time Series Databases at Trivago](http://tech.trivago.com/2016/02/23/protector/)
 	* [Improved Production Stability with Circuit Breakers at Heroku](https://blog.heroku.com/improved-production-stability-with-circuit-breakers)
@@ -807,7 +803,6 @@ An updated and organized reading list for illustrating the patterns of scalable,
 	* [Optimizing Payments with Machine Learning at Dropbox](https://dropbox.tech/machine-learning/optimizing-payments-with-machine-learning)
 
 ## Architecture
-* [Tech Stack (2 parts) at Uber](https://eng.uber.com/tech-stack-part-two/)
 * [Tech Stack at Medium](https://medium.engineering/the-stack-that-helped-medium-drive-2-6-millennia-of-reading-time-e56801f7c492)
 * [Tech Stack at Shopify](https://engineering.shopify.com/blogs/engineering/e-commerce-at-scale-inside-shopifys-tech-stack)
 * [Building Services (4 parts) at Airbnb](https://medium.com/airbnb-engineering/building-services-at-airbnb-part-4-23c95e428064)
@@ -833,7 +828,6 @@ An updated and organized reading list for illustrating the patterns of scalable,
 * [PriceAggregator: Intelligent System for Hotel Price Fetching (3 parts) at Agoda](https://medium.com/agoda-engineering/priceaggregator-an-intelligent-system-for-hotel-price-fetching-part-3-52acfc705081)
 * [Phoenix: Testing Platform (3 parts) at Tinder](https://medium.com/tinder-engineering/phoenix-tinders-testing-platform-part-iii-520728b9537)
 * [Hexagonal Architecture at Netflix](https://netflixtechblog.com/ready-for-changes-with-hexagonal-architecture-b315ec967749)
-* [Architecture of Play API Service at Netflix](https://qconsf.com/system/files/presentation-slides/qcon_netflix_play_api.pdf)
 * [Architecture of Sticker Services at LINE](https://www.slideshare.net/linecorp/architecture-sustaining-line-sticker-services)
 * [Stack Overflow Enterprise at Palantir](https://medium.com/@palantir/terraforming-stack-overflow-enterprise-in-aws-47ee431e6be7)
 * [Architecture of Following Feed, Interest Feed, and Picked For You at Pinterest](https://medium.com/@Pinterest_Engineering/building-a-dynamic-and-responsive-pinterest-7d410e99f0a9)