👉 Mapach, also known as MapReduce, is a programming model used for parallel processing in software. It was introduced by Larry Page and Sergey Brin at Google in 2004 and later implemented on other platforms such as Apache Hadoop. The core idea behind MapReduce is to break down complex data into smaller chunks that can be processed independently, which allows for better utilization of the available computing resources. By mapping these chunks onto a shared memory pool (which acts like a cache), each