Speed of light is not as abstract to us, software engineers, as you might think. If you are deploying to the cloud or if you want to squeeze every bit of performance in your app, speed of light holds you back. Light travels at an unbelievable speed of three hundred thousand kilometers per second. That's more than 7 times around the globe in one second. Is this relevant in our industry? 

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Little's law is an astounding equation that's dead simple, yet it can bring an amazing insight into what your distributed system is capable of.

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More resources:

* Little's law: https://en.wikipedia.org/wiki/Little%27s_law

* John Little: https://en.wikipedia.org/wiki/John_Little_(academic)

* Node.js and CPU intensive requests: https://stackoverflow.com/questions/3491811/node-js-and-cpu-intensive-requests

* My talk where I mention Little's law (from 23:03: https://www.youtube.com/watch?v=5TJiTSWktLU&t=23m03s)

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More resources:

* asm.js: https://en.wikipedia.org/wiki/Asm.js

* WebAssembly: https://en.wikipedia.org/wiki/WebAssembly

* Compiling C/C++/Rust/... to asm.js via LLVM backend: https://emscripten.org/

* Quake in the browser (asm.js): http://www.quakejs.com/

* Unity Engine in the browser (WebAssembly): https://blogs.unity3d.com/2018/08/15/webassembly-is-here/

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4th edition of the newsletter, apart from transcript, contains GraphQL scalability tricks, enjoy!

More resources:

* AWS Lambda: https://aws.amazon.com/lambda/

* Google Cloud Functions: https://cloud.google.com/functions/

* Azure Functions: https://azure.microsoft.com/en-us/services/functions/

* Spring Cloud Function: https://spring.io/projects/spring-cloud-function

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More resources:

Notable implementations of service mesh:

More details:

Most episodes are originally much longer. If you wish to hear full, director's cut version, check out my mailing list: https://256.nurkiewicz.com/newsletter. I will also notify you about new episodes and add some extra content like transcripts.

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Circuit breaker is a design pattern that prevents cascading failures in distributed systems. More details: https://microservices.io/patterns/reliability/circuit-breaker.html and https://docs.microsoft.com/en-us/azure/architecture/patterns/circuit-breaker.

Circuit breaker implementations:

* https://github.com/resilience4j/resilience4j (Java)

* http://www.thepollyproject.org/ (.NET)

* https://github.com/rubyist/circuitbreaker (Go)

* https://doc.akka.io/docs/akka/current/common/circuitbreaker.html (Scala/Akka)

* https://github.com/yammer/circuit-breaker-js (JavaScript)

This episode was originally twice as long. If you wish to hear full, director's cut version, check out my mailing list: https://256.nurkiewicz.com/newsletter. I will also notify you about new episodes and add some extra content.

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I explain software development in no more than 4 minutes and 16 seconds.

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Which programming languages count from 1: https://www.quora.com/Which-programming-languages-count-from-1

Background music from freesound.org: https://freesound.org/people/danlucaz/sounds/513957/