10 May 2019

Fallacies of distributed computing

The fallacies are:[1]

Although, there are some writings about they are not fallacies anymore... 

07 May 2019

HTTP 1.0 Performance

HTTP 1.0 had performance issues by slow-start of TCP. The 3-way handshaking was guilty.


This was fixed in HTTP 1.1 reusing the connections. Similar to a pool of TCP connections.


- Under HTTP 1.0, connections are not considered persistent unless a keepalive header is included,[1]
- In HTTP 1.1, all connections are considered persistent unless declared otherwise.[2]


- https://www.w3.org/Protocols/HTTP/1.0/HTTPPerformance.html
- https://hpbn.co/http1x/
- https://blog.insightdatascience.com/learning-about-the-http-connection-keep-alive-header-7ebe0efa209d
- https://en.wikipedia.org/wiki/HTTP_persistent_connection#HTTP_1.0
- https://en.wikipedia.org/wiki/TCP_congestion_control

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