WebSockets cost us $1M on our AWS bill

Recall.ai found their cloud computing costs were inflated due to inefficient inter-process communication when processing video data. Using WebSockets over loopback was costing them $1 million annually in AWS spending. After exploring alternatives, they implemented a custom shared memory solution with a specialized ring buffer for data transfer. This optimization cut CPU usage by up to 50%, saving over $1 million yearly on their AWS bill. The case highlights the substantial impact of efficient IPC on cloud computing costs for data-intensive applications.