Yes, blekko has a full web crawler, indexer, and some of the query processing code in perl. Some of the innards and query execution are in C++ for speed. Gene

Yes, blekko has a full web crawler, indexer, and some of the query processing code in perl. Some of the innards and query execution are in C++ for speed. Generally we tried to delay the conversion of a component to C++ as late as possible, since it makes it so much harder to change and iterate on. We call it "pouring cement on the code". For some things it's absolutely necessary to drop to C for speed, others it doesn't make a lot of difference since you're bound by other constraints like I/O.