Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Traditional caching fails to stop "thundering ...

Twitter is today announcing the availability of Diffy, a new piece of open-source software that developers can use to spot bugs when they’re making updates to certain parts of code. Twitter uses the ...

Diffy is a subtraction game. You choose four whole numbers between 1 and 12 and write them on the corners of a square. Then, you find the difference between numbers at neighbouring corners and write ...

While the numbers 1, 3, 9 and 12 give you five Diffy squares (shown below), placing 1, 3, 6, and12 clockwise around the square will give you 10 Diffy squares. You can find them by a combination of wor ...