rescached is a daemon that caching internet name and address on local memory for speeding up DNS resolution.
rescached primary goal is only to caching DNS queries and answers, used by personal or small group of users, to minimize unneeded traffic to outside network. This release is dedicated to Archer and github user `chadberg` and `skydrome` who keeps reporting issues and may still use the original version. Whoever you are, thank you! = Features List of current features, - Enable to handle request from UDP and TCP connections - Enable to forward request using UDP or TCP - Load and serve addresses and hostnames in `/etc/hosts` - Load and serve hosts formated files inside directory `/etc/rescached/hosts.d/` - Blocking ads and/or malicious websites through host list in `/etc/rescached/hosts.d/hosts.block` - Support loading and serving master (zone) file format from `/etc/rescached/master.d` - Integration with openresolv - Support DNS over HTTPS (DoH) (draft 14) For more information see https://github.com/shuLhan/rescached-go . = Background The original rescached software is written in C++ [1], written back since 2009. Over time, the more feature to add, the more painful to maintenance and test it. I can't trust and remember my own code after being long enough not meddling with it. After having experienced with Go and confidence enough, I try to porting it. The time its take to porting it is about one month. The first step is to create DNS library [2] that support client and server model. Everything else in rescached is just a layer to manage caches from DNS responses on top of the library. Adding new features, like loading master file, integration with openresolv and DoH is take about one months. Thanks to Go standard packages that provide user all the required libraries for HTTP and TLS. Overall I am very happy working with Go. = Benchmark == resolverbench Result of benchmarking with local blocked host file, ---- master ms 0 % ./resolverbench 127.0.0.1:53 scripts/hosts.block = Benchmarking with 27367 messages = Total: 27367 = Failed: 0 = Elapsed time: 1.053238347s ---- == dnstrace Result of benchmarking with 10000 query and 100 concurrent connections using dnstrace [3], ---- master ms 0 % dnstrace --recurse --codes --io-errors -s 127.0.0.1:53 -t A -n 10000 -c 100 redsift.io Benchmarking 127.0.0.1:53 via udp with 100 conncurrent requests Total requests: 1000000 of 1000000 (100.0%) DNS success codes: 1000000 DNS response codes NOERROR: 1000000 Time taken for tests: 10.318186376s Questions per second: 96916.3 DNS timings, 1000000 datapoints min: 0s mean: 1.017194ms [+/-sd]: 770.525µs max: 39.845887ms DNS distribution, 1000000 datapoints LATENCY | | COUNT +-------------+---------------------------------------------+--------+ 131.071µs | | 1722 393.215µs | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | 115890 655.359µs | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | 185089 917.503µs | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | 316551 1.179647ms | ▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄ | 300305 1.441791ms | ▄▄▄▄ | 31218 1.703935ms | ▄▄ | 12005 1.966079ms | ▄ | 6387 2.228223ms | ▄ | 5007 2.490367ms | | 3196 2.752511ms | | 2573 3.014655ms | | 2486 3.276799ms | | 2012 3.538943ms | | 1814 3.801087ms | | 1806 4.063231ms | | 1512 4.325375ms | | 1099 4.587519ms | | 1077 4.849663ms | | 785 5.111807ms | | 759 5.373951ms | | 901 5.636095ms | | 765 5.898239ms | | 874 6.160383ms | | 654 6.422527ms | | 476 6.684671ms | | 351 6.946815ms | | 294 7.208959ms | | 245 7.471103ms | | 292 7.733247ms | | 261 7.995391ms | | 255 8.257535ms | | 132 8.650751ms | | 396 9.175039ms | | 193 9.699327ms | | 78 10.223615ms | | 51 10.747903ms | | 102 11.272191ms | | 23 11.796479ms | | 0 12.320767ms | | 0 12.845055ms | | 0 13.369343ms | | 0 13.893631ms | | 0 14.417919ms | | 0 14.942207ms | | 0 15.466495ms | | 0 15.990783ms | | 0 16.515071ms | | 0 17.301503ms | | 0 18.350079ms | | 0 19.398655ms | | 192 20.447231ms | | 112 21.495807ms | | 0 22.544383ms | | 0 23.592959ms | | 0 24.641535ms | | 12 25.690111ms | | 28 26.738687ms | | 14 27.787263ms | | 5 28.835839ms | | 0 29.884415ms | | 0 30.932991ms | | 0 31.981567ms | | 0 33.030143ms | | 0 34.603007ms | | 0 36.700159ms | | 0 38.797311ms | | 1 ---- -- [1] https://github.com/shuLhan/rescached [2] https://github.com/shuLhan/share/tree/master/lib/dns [3] https://github.com/redsift/dnstrace -- { "github":"github.com/shuLhan", "site":"kilabit.info" } -- 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. For more options, visit https://groups.google.com/d/optout.
