Generating fixed width documents in Ruby: Introducing Fixy

A few weeks ago, we posted an article explaining how ACH works from a developer perspective. A question that came up a lot through the comments is how we generate the ACH debit files that are transmitted to the bank. This is a particularly interesting question, because it really is…

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Do Things That Scale: Engineering a Modern Business

As applications grow, their size and complexity erode away at their efficiency. As engineers, we know that there are two basic ways to achieve scalability: money and architecture. Money We can brute force the problem by throwing dollars at it. App cannot handle enough requests? Buy more servers. It’s…

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