The following code for example will block your thr...

# coroutines

[uli]

The following code for example will block your thread to perform a non-blocking lock() in fun load(key: String): Int. This does not make sense:

object : CacheLoader<String, Int>() {
                        override fun load(key: String): Int {
                            return runBlocking(krawlerPool) {
                                pushLock.lock()
                                try { pushSelector++ % queues.size }
                                finally {pushLock.unlock()}
                            }
                        }
                    }