3 ms·

And before Java, it used Microsoft FoxPro! Here's the source code: https://josh.com/notes/island-ecn-10th-birthday/ https://josh.com/notes/island-ecn-10th-bi

• clausok 6y ago
  More color on the original FoxPro matching engine: "Levine found a simple but hugely consequential 'trick' to speed matching. In Levine’s later paraphrase, what the 'enter2order' procedure did when the Island system received a new order was to: 'See if there was a record from a recently cancelled order that we can reuse for this new order. This is hugely important because that record will likely still be in the cache [fast internal memory] and using it will be much faster than making a new one. (Levine, n.d.)'" http://www.sps.ed.ac.uk/__data/assets/pdf_file/0003/97500/Island34.pdf http://www.sps.ed.ac.uk/__data/assets/pdf_file/0003/97500/Is...