PNUTS in Flight: Web-Scale Data Serving at Yahoo

Data management for stateful Web applications is extremely challenging. Applications must scale as they grow in popularity, serve their content with low latency on a global scale, and be highly available, even in the face of hardware failures. This need has generated a new class of Internet-scale data management systems. Yahoo has more than 100 user-facing applications and numerous internal platforms. To meet its data management needs, it built the PNUTS system. Here, the authors review PNUTS´ growing adoption, point to specific applications, and detail several of PNUTS´ features.