@Grab(group='com.h2database', module='h2-mvstore', version='1.4.192') import org.h2.mvstore.* def fileName = "mvtest.h2" if (args.size() == 1) { fileName = args[1] } MVStore s = MVStore.open(fileName) // create/get the map named "data" MVMap map = s.openMap("data") numMessages = 10000000 println "Created store and starting" long start = System.currentTimeMillis() (1..numMessages).each { String randomContent = UUID.randomUUID().toString() // add and read some data map.put(it, randomContent) } long stop = System.currentTimeMillis() long contentSize = UUID.randomUUID().toString().bytes.length println "Wrote $numMessages keys, ${numMessages * contentSize} bytes in ${stop - start} ms" def writeSpeed = (numMessages * contentSize)/((stop - start)/ 1000) println "Speed is: $writeSpeed byte/sec" // close the store (this will persist changes) s.close() //The read part map = MVStore.open(fileName).openMap("data") //read now 10M keys start = System.currentTimeMillis() (1..numMessages).each { int key = (int) Math.floor(Math.random() * numMessages) + 1 // add and read some data String randomContent = map.get(key) } stop = System.currentTimeMillis() println "Read $numMessages keys, ${numMessages * contentSize} bytes in ${stop - start} ms" def readSpeed = (numMessages * contentSize)/((stop - start)/ 1000) println "Read speed is: $readSpeed byte/sec"