i can not open the java version link https://github.com/robaho/jkeydb . it's returns 404 code
On Saturday, December 12, 2020 at 10:04:42 PM UTC+3 ren...@ix.netcom.com wrote: > Hi all, > > I thought this might be of interest to some. I released a Java version of > keydb <https://github.com/robaho/keydb> at jkeydb > <https://github.com/robaho/jkeydb>. I primarily did the exercise to keep > my Java skills fresh and do an updated performance comparison between Go > and Java. > > Tests performed using OSX Big Sur. > > Using Go 1.15.5: > > insert time 10000000 records = 24670 ms, usec per op 2.4670965 > close time 16945 ms > scan time 10631 ms, usec per op 1.063149 > scan time 50% 470 ms, usec per op 0.941686 > random access time 9.658001 us per get > close with merge 1 time 0.681 ms > scan time 11253 ms, usec per op 1.1253718 > scan time 50% 471 ms, usec per op 0.942876 > random access time 9.702651 us per get > > Using Java 1.15: > > insert time 10000000 records = 24102ms, usec per op 2.4102 > close time 13564ms > scan time 10259ms, usec per op 1.0259 > scan time 50% 474ms, usec per op 0.948 > random access time 13.209us per get > close with merge 1 time 0ms > scan time 10142ms, usec per op 1.0142 > scan time 50% 501ms, usec per op 1.002 > random access time 13.28us per get > > Performance is very similar, except that Go is significantly faster in the > random access tests. I attribute this to the JNI overhead in making lots of > small IO requests. In a previous life I wrote some custom JNI code for > ultrafast IO and I might resurrect that to see if it makes a difference. > > You can vary the ‘keyIndexInterval’ to trade memory for speed which > significantly helps the Java version by reducing the IO. > > There are significantly fewer source (non test) code files in the Go > version, 10 vs. 26 which highlights the simplicity of Go. > > Anyway, feel free to ask any questions if you wish. > > > -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/3ea0dd7a-f7bb-46a5-b036-0f464f71761en%40googlegroups.com.
