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Why I often implement things from scratch

Once upon a time there was an Erlang programmer who needed an FTP server running on one of the hosts in a private network. In fact he didn’t need an FTP server, he just needed to transfer files between a central server and his client…

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Pure and simple transaction memories

Now for a technical article. How can several parallel programs maintain a consistent view of state. By this I mean how can two programs, possibly in different countries, manipulate common state variables in a consistent manner? How can they do so in a way that…

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Erlang meets Smalltalk

Here I am evangelising on the right. Last Thursday I gave an invited talk on Erlang at the European Smalltalk Users Group meeting in Prague. This was a chance to meet hard-core members of the Smalltalk community. Now I must admit I rather like Smalltalk…

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Why I don’t like shared memory

In my last blog concurrency is easy I wrote about a simple model for programming concurrent systems. When you write a blog you have to think about the target audience and what level you want to pitch the blog at. Should it be technically advanced,…

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Concurrency is easy

We understand concurrency A deep understanding of concurrency is hard-wired into our brains. We react to stimulation extremely quickly, in a part of the brain called the amygdala, without this reaction system we would die. Conscious thought is just too slow, by the time the…

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Making Money from Erlang

Last Friday I had lunch with Jane Walerud. Jane is one of the unsung heroines of the Erlang story. She was the first entrepreneur to recognise that having a better programming technology gave commercial advantages that could be turned into money. Jane was the first…

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