Built at the layer, from parsed config, so that a bad URL fails in main with the config parse in the stack trace rather than at whatever moment something first touches a hidden holder.
Built at the layer, from parsed config, so that a bad URL fails in main with the config parse in the stack trace rather than at whatever moment something first touches a hidden holder.
No parameter has a default so that DbInit is the one place that decides the pool's settings, and a caller that skips it has to say what it wants.
