{"id":3876,"date":"2018-01-26T10:11:46","date_gmt":"2018-01-26T09:11:46","guid":{"rendered":"https:\/\/millistream.com\/?p=3876"},"modified":"2018-01-26T21:44:59","modified_gmt":"2018-01-26T20:44:59","slug":"upgraded-feed-access-point-in-amazon-ec2","status":"publish","type":"post","link":"https:\/\/millistream.com\/index.php\/upgraded-feed-access-point-in-amazon-ec2\/","title":{"rendered":"Upgraded feed access point in Amazon EC2"},"content":{"rendered":"<p>When Amazon applied patches to their EC2 infrastructure to secure it against the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Meltdown_(security_vulnerability)\" target=\"_blank\" rel=\"noopener\">Meltdown<\/a> vulnerability in their Intel processors on December 2017 we experienced a large performance degradation of our feed access point in AWS EC2 Ireland.<\/p>\n<p>Unfortunately it turns out that network heavy distribution applications such as our feed access point is the type of application that are the most affected by the Meltdown mitigations, experiencing up to 50% performance degradation.<\/p>\n<p>To mitigate this we have upgraded our feed access point in AWS EC2 to the instance type that have the highest performance available. Unfortunately upgrading to this instance type means that the old IP address cannot be retained (unfortunately the IP address of the old access point was not an Elastic address, but the new one is) and thus all users of the <strong>aws.millistream.com<\/strong> access point must open for port 9000\/9100 (depending on if receiving delayed and\/or realtime data) to IPv4 address <strong>52.51.190.39<\/strong>.<\/p>\n<p>The CNAME in our DNS servers for <strong>aws.millistream.com<\/strong> will change from the current value of <strong>54.195.186.72<\/strong> to <strong>52.51.190.39<\/strong> at 2018-02-03.<\/p>\n<p>Valid feed access points for the Millistream Data Feed (MDF):<\/p>\n<pre><b>Address \t        Provider        Location<\/b>\r\nsth2.millistream.com    IP-Only         Stockholm, Sweden \r\nsth.millistream.com \tVerizon \tStockholm, Sweden\r\nlon.millistream.com \tC4L \t        London, UK\r\naws.millistream.com \tAmazon EC2 \tDublin, Ireland<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>When Amazon applied patches to their EC2 infrastructure to secure it against the Meltdown vulnerability in their Intel processors on December 2017 we experienced a large performance degradation of our feed access point in AWS EC2 Ireland. Unfortunately it turns out that network heavy distribution applications such as our feed access point is the type [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":3904,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"class_list":["post-3876","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technology-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Upgraded feed access point in Amazon EC2 - Millistream<\/title>\n<meta name=\"description\" content=\"Financial market data from exchanges like Nasdaq, NYSE, Deutsche B\u00f6rse and London Stock Exchange. 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