One Character Saves 15,000 Servers

So, the engineer typed an “&” after the auto keyword to indicate we want a reference instead of a copy. It was a one-character commit, which, after it was shipped to production, equated to an estimated 15,000 servers in capacity savings per year!

A text screenshot describes an engineer adding an ampersand after the C++ auto keyword to use a reference instead of making a copy. The joke is that a tiny one-character code change produced enormous infrastructure savings, making it a fitting reaction to clever optimization or unexpectedly impactful engineering.

• @right_wing_dev_squads / 12959 2025-09-22