If you have been following these posts then you will be aware that a problem was encountered with data corruption when a number of concurrent usesr were hitting the same data files. This problem has now been solved. There’s some tidying up of the code to be carried out – it was important to get [...]
First, the rebuilding. The Railroad and Parameters modules have been rebuilt, and work continues on the User module. After that, there are a further three modules to be rebuilt before a further volume test takes place; but irrespective of the results of that test (providing the test is not an absolute failure) work will continue [...]
Some time has been spent today becoming familiar with how SQLite fits in with Python; and it has been reasonably painless! A couple of transactions have already been built for MOPS, and the aim now is to convert a substantial amount of MOPS to use the SQLite database and then to give it the same [...]
Further to the post earlier today, it appears that there may be a while to wait for MySQL to be available to Python users: Python v3 is not that long out of the box (and that is what MOPS has been written in) and the MySQL adaptors are still awaited. So, it’s a choice between [...]
Although it’s not expected that MOPS will be a heavy user of data, it still needs to support a small number of concurrent users without any significant issues. Initially, MOPS was built with a file-locking mechanism; but testing with multiple concurrent users accessing the same data started showing some file corruption. Changes to the file-locking [...]