Stephen Best

This PR consists of some tests that exercise connection switching in threads along with a small bug fix that seems to enable the desired behavior. It covers switching between databases...

Improved forking implementation

3

* Set config value `forks` instead of `parallel_workers` * Supervisor process forks worker `n` processes * Supervisor terminates workers when it is stopped * Workers monitor supervisor and terminate themselves...

Fix: Runner adds exceptions to instrumentation payload

1

The DataDog integration checks for `:exception` in the instrumentation payload but `Runner` does not add it. Looks like an oversight to me. Should it be added?

Thread based concurrency

3

Concurrently runs a number of 'Racecar::Runner' instances in a fixed size thread pool. Each thread starts a single `Racecar::Runner` with `Racecar::Consumer` class instance. All threads run the same consumer class,...