Putting servers under a "microscope"?
At -= 2 we had a special set of prod machines called microscopes. These machines ran fully instrumented binaries with full logging and oodles of extra instrumentation.
For read-only services without side effects a small chunk of traffic was mirrored to the microscopes. For mutable requests a %age was sent there.
I don't expect we'll let engineers connect Yourkit to running production code, but I would have to expect that something like this exists, right? right?
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