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Reduce polling access by exponential backoff like strategy

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uu59 2014-11-20 17:25:02 +09:00
parent 0c940ee666
commit 6e778fe11f
1 changed files with 9 additions and 3 deletions
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12
app/assets/javascripts/notification.js
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@ -14,20 +14,26 @@
created: function(){ created: function(){
var self = this; var self = this;
var currentInterval = POLLING_INTERVAL;
var fetch = function(){ var fetch = function(){
self.fetchAlertsData().then(function(alerts){ self.fetchAlertsData().then(function(alerts){
if(self.alerts.toString() == alerts.toString()) {
currentInterval *= 1.1;
} else {
currentInterval = POLLING_INTERVAL;
}
self.alerts = alerts; self.alerts = alerts;
setTimeout(fetch, currentInterval);
})["catch"](function(xhr){ })["catch"](function(xhr){
if(xhr.status === 401) { if(xhr.status === 401) {
clearInterval(timer); // signed out // signed out
} }
if(xhr.status === 0) { if(xhr.status === 0) {
clearInterval(timer); // server unreachable (maybe down) // server unreachable (maybe down)
} }
}); });
}; };
fetch(); fetch();
var timer = setInterval(fetch, POLLING_INTERVAL);
}, },
computed: { computed: {