Decoding the code

Mariusz Krzanowski blog

Category: Other

Scaling out your front end with an actor

Connecting front end and back end side is difficult. The main problem is the protocol itself. It is stateless. Connection is being re-created each time. HTTP/2 changes this behavior a little bit, but this is the transport layer only. Multiple requests/responses can be handled in a different order. It means there are many traps waiting for a developer.

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Long ping response and slow network kill your application

Business requires fast software delivery. This sometimes leads to a situation in which developers are focused less on performance and more on business requirements. The problem is that badly designed architecture can unable to fix performance in the future. Many times I have explained that page with a total weight of about 2 MB is too large. I  have explained that server side has a limited bandwidth. For 1Gb/s connection speed at server side you can handle about 50 concurrent users in the same time to show them full content in 1 second. I also tell my colleagues that we have to reduce number of requests. Each request not only consumes browser connection pool limit, but also server resources. When clients are located far from our server, pages can load very slowly. When I was on Galapagos I realized (again) how slow can a network connection be and how important wise web design is.

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