{"id":1361,"date":"2016-04-18T21:41:23","date_gmt":"2016-04-18T20:41:23","guid":{"rendered":"http:\/\/www.amibroker.com\/kb\/?p=1361"},"modified":"2016-04-21T21:46:53","modified_gmt":"2016-04-21T20:46:53","slug":"do-not-exceed-real-time-symbol-limit","status":"publish","type":"post","link":"https:\/\/www.amibroker.com\/wordpress\/kb\/2016\/04\/18\/do-not-exceed-real-time-symbol-limit\/","title":{"rendered":"Do not exceed real-time symbol limit"},"content":{"rendered":"<p>When we subscribe to a real-time datasource, such as eSignal or IQFeed &#8211; our subscription package determines how many symbols we can access in realtime at the same time. The plugin configuration in <strong>File->Database Settings->Configure<\/strong> should match the subscription limit.<\/p><p>IQFeed:<\/p><p><img src='http:\/\/www.amibroker.com\/kb\/wp-content\/uploads\/2016\/04\/rtlimit1.png' alt='rt config'><\/p><p>eSignal:<\/p><p><img src='http:\/\/www.amibroker.com\/kb\/wp-content\/uploads\/2016\/04\/rtlimit2.png' alt='rt config'><\/p><p>As it is explained in the users guide here: <a href=\"http:\/\/www.amibroker.com\/guide\/h_rtsource.html\">http:\/\/www.amibroker.com\/guide\/h_rtsource.html<\/a> &#8211; although AmiBroker is able to handle more symbols in the database than the streaming limit, we should not really exceed the RT subscription limits in continuous screening during session hours.<\/p><p>This is because if we do otherwise and try to access more symbols than our subscription covers, then it would requires lengthy process that includes:<\/p><ol><li>removing the oldest symbol from the streaming list<li>adding the new one<li>triggering backfill for the newly added stock to fill the historical data from last valid update that we already have<li>streaming and displaying RT data.<\/ol><p>Then such process will be repeated for each new symbol that is included in screening. As a result, that might cause various problems with the data source not able to handle that many backfill requests in a short time, additionally data-vendors may be pro-actively protecting their servers from abusing the streaming limits this way.<\/p><p>Therefore &#8211; it is highly recommended to stay within the subscription limits for real-time operation and scanning to avoid problems.<\/p>","protected":false},"excerpt":{"rendered":"<p>When we subscribe to a real-time datasource, such as eSignal or IQFeed &#8211; our subscription package determines how many symbols we can access in realtime at the same time. The plugin configuration in File->Database Settings->Configure should match the subscription limit.IQFeed:eSignal:As it is explained in the users guide here: http:\/\/www.amibroker.com\/guide\/h_rtsource.html &#8211; although AmiBroker is able to [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5],"tags":[],"_links":{"self":[{"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/posts\/1361"}],"collection":[{"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/comments?post=1361"}],"version-history":[{"count":1,"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/posts\/1361\/revisions"}],"predecessor-version":[{"id":1364,"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/posts\/1361\/revisions\/1364"}],"wp:attachment":[{"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/media?parent=1361"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/categories?post=1361"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.amibroker.com\/wordpress\/kb\/wp-json\/wp\/v2\/tags?post=1361"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}