保持缓存数据在同一台机器上的diff WPF应用程序之间共享的最佳方法是什么？

I am thinking of keeping data in a DataSet in a WCF hosted service and other apps (on same box) can access the data via Named Pipes (exposed through the WCF service). The apps then keep a copy of dataSet inside them so as to not re-fetch the data from the WCF unless it gets changed.I am thinking of keeping data in a DataSet in a