<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Ahoj Rene,<div class=""><div class=""><br class=""></div><div class="">V case, ked sme hladali vhodnu in-memory DB neexistovala ziadna alternativa, ktora by dokazala vypocitat “funnel” (kolko ludi urobi event E1 potom E2 potom E3 …) nad 1mld eventov za 1 sekundu. Navyse tie eventy a ich properties si vyklika user pri kazdej analyze uplne inak - nemozes pouzit predpocitane data ani ElasticSearch.</div><div class=""><div class="">Zaroven sme potrebovali document-oriented DB (skrtnes napr. Redis), s podporou Map-Reduce, distribuovanu, skalovatelnu, ktora na maximum vyuzije HW vykon, ktory jej poskytnes.</div></div><div class=""><div class=""><br class=""></div><div class="">Dnes vo svete existuju Lamba a Kappa architektury pre real-time stream processing. <a href="http://strataconf.com/big-data-conference-ca-2015/public/schedule/detail/38774" class="">http://strataconf.com/big-data-conference-ca-2015/public/schedule/detail/38774</a> a <a href="http://www.slideshare.net/jozokovac/realtime-streaming-architecture-in-infinario" class="">http://www.slideshare.net/jozokovac/realtime-streaming-architecture-in-infinario</a></div><div class="">Teoriu k tomu v zasade pozname, teraz potrebujeme navyse sikovne ruky co nam to pomozu zrealizovat.</div><div class=""><br class=""></div><div class="">Bonus: Tu su skusenosti s NoSQL a SQL databazami, ktore sme testovali: <a href="https://infinario.com/speedtest" class="">https://infinario.com/speedtest</a></div></div><div apple-content-edited="true" class="">
<div class=""><br class=""></div><div class="">Miso</div>
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<br class=""><div><blockquote type="cite" class=""><div class="">On 06 Aug 2015, at 10:14, René Klačan <<a href="mailto:rene.klacan@gmail.com" class="">rene.klacan@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Ahoj,<div class=""><br class=""></div><div class="">len zo zaujimavosti by som sa rad spytal. Aky ste mali motivaciu si naimplementovat vlastnu DB? A ake boli argumenty proti existujucim rieseniam ako RethingDB[1] alebo VoltDB[2]. Ak ste nahodou nic z toho nezvazili, tak sa odporucam pozriet prave na tieto dve DB.</div><div class=""><br class=""></div><div class="">Rene</div><div class=""><br class=""></div><div class="">[1] <a href="http://rethinkdb.com/" class="">http://rethinkdb.com/</a></div><div class="">[2] <a href="http://voltdb.com/" class="">http://voltdb.com/</a></div><div class=""><br class=""></div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">2015-08-06 9:53 GMT+02:00 Michal Novovesky <span dir="ltr" class=""><<a href="mailto:michal.novovesky@infinario.com" target="_blank" class="">michal.novovesky@infinario.com</a>></span>:<br class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style="word-wrap:break-word" class="">Ahojte,<div class=""><br class=""></div><div class="">Snajpa ma odkazal na community-list, ze by som tu mohol najst niekoho co by mi vedel pomoct s problemom, ktory riesime u nas vo firme (<a href="https://infinario.com/" target="_blank" class="">https://infinario.com/</a>).</div><div class=""><br class=""></div><div class="">Vytvorili sme analyticku platformu, ktora dokaze real-time spracovavat data, vdaka tomu, ze ich uklada do nami vyrobenej db do RAM serverov. Toto riesenie sice funguje super, ale na ukladanie velkeho mnozstva historickych dat je prilis drahe, a preto by sme potrebovali vyriesit variant, kedy sa data okrem RAMky ukladaju aj do normalneho storagu a uzivatel ma moznost si vyberat data, s ktorymi chce pracovat real-time, a s ktorymi nie.</div><div class=""><br class=""></div><div class="">Nasiel by sa tu niekto, kto by bol schopny a ochotny nam pomoct pri najdeni a implementacii spravnej technologie(napr. Hadoop) na ukladanie stoviek TB historickych dat a vedel by implementovat proces pre prenos dat zo storagu (firma X si zvoli data eventov A,B za obdobie M-N) do real-time databazy v RAMke? S tym by suvisela aj priprava rozhrania pre load dat medzi roznymi systemami, vratane procesov pre citanie a zapis do pripojenych databaz a APIciek.</div><div class=""><br class=""></div><div class="">Samozrejme takuto pomoc sme ochotni stedro zaplatit :) Napisete mi prosim na <a href="mailto:michal.novovesky@infinario.com" target="_blank" class="">michal.novovesky@infinario.com</a> ak by ste mali zaujem nam pomoct?</div><div class=""><br class=""></div><div class="">Vdaka,</div><div class="">Miso</div></div><br class="">_______________________________________________<br class="">
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