{"id":178,"date":"2014-09-02T15:46:18","date_gmt":"2014-09-02T15:46:18","guid":{"rendered":"https:\/\/uptimerobot.com\/blog\/?p=178"},"modified":"2025-11-13T15:25:25","modified_gmt":"2025-11-13T15:25:25","slug":"performance-issues-any-false-positives-you-may-have-received","status":"publish","type":"post","link":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/","title":{"rendered":"Performance Issues &amp; Any False-Positives You May Have Received"},"content":{"rendered":"<p>Uptime Robot has been a very stable service for a long time. Yet, for the last few weeks, we know that some users have received false-positives.<\/p>\n<h3>Why did that happen?<\/h3>\n<p>In short, the servers we used couldn&#8217;t handle the load :).<\/p>\n<p>In detail, we always look for ways to heavily optimize the system\u00a0and the engine to minimize the need for new CPU, RAM or diskspace.\u00a0The optimizations vary from perfecting the queries used or compressing not-frequently-used-data to choosing the right\u00a0platforms for the right job. But, we experienced that, how much you optimize, every system\u00a0has a limit and you shall grow that system\u00a0before getting close to that limit.<\/p>\n<h3>What are the actions taken?<\/h3>\n<p>We have added more servers and strengthened the current ones.<\/p>\n<p>And, besides the servers added, from now on, we&#8217;ll be adding new ones before the load gets heavier so that the system will always stay healthy.<\/p>\n<p>Additionally, various new controls are added to the engine to minimize false-positives and Uptime Robot will &#8220;very&#8221; soon start verifying downtimes from multiple locations at once (rather than the current setup which is 1 remote location).<\/p>\n<h3>What are the new IPs (if you need to whitelist them)?<\/h3>\n<p>There is now an additional engine and 4 more remote nodes to verify downtimes. The up-to-date list of IPs can be found at <a href=\"http:\/\/uptimerobot.com\/locations\">Locations &amp; IPs page.<\/a><\/p>\n<p>To sum up, just wanted to inform you that our hands are on it.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Uptime Robot has been a very stable service for a long time. Yet, for the last few weeks, we know that some users have received false-positives. Why did that happen? In short, the servers we used couldn&#8217;t handle the load :). In detail, we always look for ways to heavily optimize the system\u00a0and the engine [&hellip;]<\/p>\n","protected":false},"author":16,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"_is_featured_guide":false,"_post_views":115,"_reading_completions":203,"footnotes":""},"categories":[2],"tags":[],"class_list":["post-178","post","type-post","status-publish","format-standard","hentry","category-announcements"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Performance Issues &amp; Any False-Positives You May Have Received | UptimeRobot Blog<\/title>\n<meta name=\"description\" content=\"Performance issues and false positives in UptimeRobot explained, a period of high server load caused some incorrect down alerts and has since been fixed.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Performance Issues &amp; Any False-Positives You May Have Received | UptimeRobot Blog\" \/>\n<meta property=\"og:description\" content=\"Performance issues and false positives in UptimeRobot explained, a period of high server load caused some incorrect down alerts and has since been fixed.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/\" \/>\n<meta property=\"og:site_name\" content=\"UptimeRobot Blog\" \/>\n<meta property=\"article:published_time\" content=\"2014-09-02T15:46:18+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-11-13T15:25:25+00:00\" \/>\n<meta name=\"author\" content=\"Tomas Koprusak\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Tomas Koprusak\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/\"},\"author\":{\"name\":\"Tomas Koprusak\",\"@id\":\"https:\/\/uptimerobot.com\/blog\/#\/schema\/person\/4e351b3eb3c7a5987a73b413d8354468\"},\"headline\":\"Performance Issues &amp; Any False-Positives You May Have Received\",\"datePublished\":\"2014-09-02T15:46:18+00:00\",\"dateModified\":\"2025-11-13T15:25:25+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/\"},\"wordCount\":248,\"commentCount\":32,\"articleSection\":[\"Announcements\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/\",\"url\":\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/\",\"name\":\"Performance Issues &amp; Any False-Positives You May Have Received | UptimeRobot Blog\",\"isPartOf\":{\"@id\":\"https:\/\/uptimerobot.com\/blog\/#website\"},\"datePublished\":\"2014-09-02T15:46:18+00:00\",\"dateModified\":\"2025-11-13T15:25:25+00:00\",\"author\":{\"@id\":\"https:\/\/uptimerobot.com\/blog\/#\/schema\/person\/4e351b3eb3c7a5987a73b413d8354468\"},\"description\":\"Performance issues and false positives in UptimeRobot explained, a period of high server load caused some incorrect down alerts and has since been fixed.\",\"breadcrumb\":{\"@id\":\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/uptimerobot.com\/blog\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Announcements\",\"item\":\"https:\/\/uptimerobot.com\/blog\/category\/announcements\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Performance Issues &amp; Any False-Positives You May Have Received\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/uptimerobot.com\/blog\/#website\",\"url\":\"https:\/\/uptimerobot.com\/blog\/\",\"name\":\"UptimeRobot Blog\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/uptimerobot.com\/blog\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/uptimerobot.com\/blog\/#\/schema\/person\/4e351b3eb3c7a5987a73b413d8354468\",\"name\":\"Tomas Koprusak\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/uptimerobot.com\/blog\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/42e6751dc39e91f1c7ab4926189550054308e366428ceb70e9621d680b843032?s=96&d=retro&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/42e6751dc39e91f1c7ab4926189550054308e366428ceb70e9621d680b843032?s=96&d=retro&r=g\",\"caption\":\"Tomas Koprusak\"},\"description\":\"He has worked for Sygic as a marketer and co-led the implementation and development of a product acquired from a competitor. He has also worked as a freelance developer, helping clients from various areas. Tomas brings a wealth of industry experience to our team. He spent a few years in the blockchain industry, leading projects and marketing teams at multiple blockchain-based companies. He has presented products and managed deals in more than 10 countries around the world, managed the ICO, and built a successful marketing team at Fuergy that continues to thrive. Tomas managed a product team for the biggest job site in Slovakia, covering development and transformation to a new B2B app. Not only is Tomas skilled at web development, but he also has a deep understanding of SaaS businesses, which makes him an invaluable asset in shaping and leading various projects at UptimeRobot. His focus is always on the continual improvement of our service and user experience. In addition to his professional achievements, Tomas is a devoted father. His personal interests include cycling (he traveled around the whole country of Slovakia), playing guitar (he even played in a band), servicing bikes, music, and enjoying good beer.\",\"sameAs\":[\"https:\/\/www.linkedin.com\/in\/tomas-koprusak\"],\"url\":\"https:\/\/uptimerobot.com\/blog\/author\/tomas\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Performance Issues &amp; Any False-Positives You May Have Received | UptimeRobot Blog","description":"Performance issues and false positives in UptimeRobot explained, a period of high server load caused some incorrect down alerts and has since been fixed.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/","og_locale":"en_US","og_type":"article","og_title":"Performance Issues &amp; Any False-Positives You May Have Received | UptimeRobot Blog","og_description":"Performance issues and false positives in UptimeRobot explained, a period of high server load caused some incorrect down alerts and has since been fixed.","og_url":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/","og_site_name":"UptimeRobot Blog","article_published_time":"2014-09-02T15:46:18+00:00","article_modified_time":"2025-11-13T15:25:25+00:00","author":"Tomas Koprusak","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Tomas Koprusak","Est. reading time":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/#article","isPartOf":{"@id":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/"},"author":{"name":"Tomas Koprusak","@id":"https:\/\/uptimerobot.com\/blog\/#\/schema\/person\/4e351b3eb3c7a5987a73b413d8354468"},"headline":"Performance Issues &amp; Any False-Positives You May Have Received","datePublished":"2014-09-02T15:46:18+00:00","dateModified":"2025-11-13T15:25:25+00:00","mainEntityOfPage":{"@id":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/"},"wordCount":248,"commentCount":32,"articleSection":["Announcements"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/","url":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/","name":"Performance Issues &amp; Any False-Positives You May Have Received | UptimeRobot Blog","isPartOf":{"@id":"https:\/\/uptimerobot.com\/blog\/#website"},"datePublished":"2014-09-02T15:46:18+00:00","dateModified":"2025-11-13T15:25:25+00:00","author":{"@id":"https:\/\/uptimerobot.com\/blog\/#\/schema\/person\/4e351b3eb3c7a5987a73b413d8354468"},"description":"Performance issues and false positives in UptimeRobot explained, a period of high server load caused some incorrect down alerts and has since been fixed.","breadcrumb":{"@id":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/uptimerobot.com\/blog\/performance-issues-any-false-positives-you-may-have-received\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/uptimerobot.com\/blog\/"},{"@type":"ListItem","position":2,"name":"Announcements","item":"https:\/\/uptimerobot.com\/blog\/category\/announcements\/"},{"@type":"ListItem","position":3,"name":"Performance Issues &amp; Any False-Positives You May Have Received"}]},{"@type":"WebSite","@id":"https:\/\/uptimerobot.com\/blog\/#website","url":"https:\/\/uptimerobot.com\/blog\/","name":"UptimeRobot Blog","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/uptimerobot.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/uptimerobot.com\/blog\/#\/schema\/person\/4e351b3eb3c7a5987a73b413d8354468","name":"Tomas Koprusak","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/uptimerobot.com\/blog\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/42e6751dc39e91f1c7ab4926189550054308e366428ceb70e9621d680b843032?s=96&d=retro&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/42e6751dc39e91f1c7ab4926189550054308e366428ceb70e9621d680b843032?s=96&d=retro&r=g","caption":"Tomas Koprusak"},"description":"He has worked for Sygic as a marketer and co-led the implementation and development of a product acquired from a competitor. He has also worked as a freelance developer, helping clients from various areas. Tomas brings a wealth of industry experience to our team. He spent a few years in the blockchain industry, leading projects and marketing teams at multiple blockchain-based companies. He has presented products and managed deals in more than 10 countries around the world, managed the ICO, and built a successful marketing team at Fuergy that continues to thrive. Tomas managed a product team for the biggest job site in Slovakia, covering development and transformation to a new B2B app. Not only is Tomas skilled at web development, but he also has a deep understanding of SaaS businesses, which makes him an invaluable asset in shaping and leading various projects at UptimeRobot. His focus is always on the continual improvement of our service and user experience. In addition to his professional achievements, Tomas is a devoted father. His personal interests include cycling (he traveled around the whole country of Slovakia), playing guitar (he even played in a band), servicing bikes, music, and enjoying good beer.","sameAs":["https:\/\/www.linkedin.com\/in\/tomas-koprusak"],"url":"https:\/\/uptimerobot.com\/blog\/author\/tomas\/"}]}},"_links":{"self":[{"href":"https:\/\/uptimerobot.com\/blog\/wp-json\/wp\/v2\/posts\/178","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/uptimerobot.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/uptimerobot.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/uptimerobot.com\/blog\/wp-json\/wp\/v2\/users\/16"}],"replies":[{"embeddable":true,"href":"https:\/\/uptimerobot.com\/blog\/wp-json\/wp\/v2\/comments?post=178"}],"version-history":[{"count":0,"href":"https:\/\/uptimerobot.com\/blog\/wp-json\/wp\/v2\/posts\/178\/revisions"}],"wp:attachment":[{"href":"https:\/\/uptimerobot.com\/blog\/wp-json\/wp\/v2\/media?parent=178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/uptimerobot.com\/blog\/wp-json\/wp\/v2\/categories?post=178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/uptimerobot.com\/blog\/wp-json\/wp\/v2\/tags?post=178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}