What is the most efficient cross-process communication method for IIS web services

Question

We have a set of (ASMX but could be WCF) 64-bit web services which need to execute some 32-bit managed code (the APIs have 32-bit COM dependencies and cannot be executed in 64-bit) for processing on the same physical machine. The 64-bit web services are hosted in IIS 7.0. Note: some of the messages contain large byte arrays.

What is the most efficient way to set this up? WCF with named pipes and binary serialization of the messages?

Answer 1

Yes. Use Named pipes if it is all on one machine. Use binary serialization if you have large byte arrays.