{"id":671,"date":"2017-10-22T21:22:56","date_gmt":"2017-10-22T21:22:56","guid":{"rendered":"http:\/\/wiki.thomasandsofia.com\/?p=671"},"modified":"2017-10-22T23:51:22","modified_gmt":"2017-10-22T23:51:22","slug":"elasticache","status":"publish","type":"post","link":"https:\/\/wiki.thomasandsofia.com\/?p=671","title":{"rendered":"ElastiCache"},"content":{"rendered":"<p><a href=\"https:\/\/www.udemy.com\/aws-certified-solutions-architect-associate\/learn\/v4\/t\/lecture\/2152298?start=0\" target=\"_blank\" rel=\"noopener\">https:\/\/www.udemy.com\/aws-certified-solutions-architect-associate\/learn\/v4\/t\/lecture\/2152298?start=0<\/a><\/p>\n<p>ElastiCache is\u00a0 a web service that makes it easy to deploy, operate and scale an in-memory cache in the cloud.\u00a0 The service improves the performance of web applications by allowing you to retrieve information from fast, managed, in-memory caches, instead of relying entirely on slower disk-based databases.<\/p>\n<p>ElastiCache can be used to significantly improve latency and throughput for many read-heavy application workloads (such as social networking, gaming, media sharing and Q&amp;A portals) or compute-intensive workloads (such as a recommendation engine).<\/p>\n<p>Caching improves application performance by storing critical pieces of data in memory for low-latency access.\u00a0 Cached information may include the results of I\/O-intensive database queries or the results of computationally-intensive calculations.<\/p>\n<h2>Types of ElastiCache<\/h2>\n<ul>\n<li>Memcached\n<ul>\n<li>Widely adopted memory object caching system.\u00a0 ElastiCache is protocol compliant with Memcahced, so popular tools that you use today with existing Memcached environments will work seamlessly with the service.<\/li>\n<\/ul>\n<\/li>\n<li>Redis\n<ul>\n<li>Popular open-sourced in-memory key-value store that supports data structures such as sorted sets and lists.\u00a0 ElastiCache supports Master \/ Slave replication and Multi-AZ which can be used to achieve cross AZ redundancy.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2>Exam Tips<\/h2>\n<ul>\n<li>Typically you will be given a scenario where a particular database is under a lot of stress\/load.\u00a0 You may be asked which service you should use to alleviate this.\n<ul>\n<li>ElastiCahce is a good choice if your database is particularly read heavy and not prone to frequent changing.<\/li>\n<li>RedShift is a good answer if the reason your database is failing is because management keep running OLAP transactions on it.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.udemy.com\/aws-certified-solutions-architect-associate\/learn\/v4\/t\/lecture\/2152298?start=0 ElastiCache is\u00a0 a web service that makes it easy to deploy, operate and scale an in-memory cache in the cloud.\u00a0 The service improves the performance of web applications by allowing you to retrieve information from fast, managed, in-memory caches, instead of relying entirely on slower disk-based databases. ElastiCache can be used to significantly improve ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/wiki.thomasandsofia.com\/?p=671\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18,20],"tags":[],"class_list":["post-671","post","type-post","status-publish","format-standard","hentry","category-amazon-web-services-aws","category-aws-databases"],"_links":{"self":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts\/671","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=671"}],"version-history":[{"count":3,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts\/671\/revisions"}],"predecessor-version":[{"id":674,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts\/671\/revisions\/674"}],"wp:attachment":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=671"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=671"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=671"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}