3.3.2 Make Use of Existing Parallel Software
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3.3.2 Make Use of Existing Parallel Software

There is no longer any shortage of parallel software environments that can present a single-threaded programming environment, including relational databases, web-application servers, and map-reduce environments. For example, a common design provides a separate program for each user, each of which generates SQL that is run concurrently against a common relational database. The per-user programs are responsible only for the user interface, with the relational database taking full responsibility for the difficult issues surrounding parallelism and persistence.

Taking this approach often sacrifices some performance, at least when compared to carefully hand-coding a fully parallel application. However, such sacrifice is often justified given the great reduction in development effort required.