Iris, a new notification and message queuing system has allowed Facebook to cut down on delivering excess data by roughly 40 percent an deven though Facebook caused an uproar when it forced all of its users to download the messenger app but despite the controversy everyone’s on it. Now Facebook has unveiled how it updated its infrastructure to make sure the messages don’t lag with their new creation in the line-up: Iris, a new messaging-queue system.

Although Facebook has been improving Messenger’s features since its inception, the infrastructure of the technology that powers those additions lagged when Messenger became available to mobile devices, which became extremely important when Facebook had its users download the Messenger app instead of chatting in the native Facebook app whether or not they wanted and to upgrade Messenger’s foundations, Facebook invented a faster syncing method that has reportedly cut down the amount of traffic on its network and led to a roughly 30% percent decrease in unsent messages and errors.

Before Messenger’s revamp, when a chatter received a chat line on the Messenger app on their mobile device, the applications would get pinged telling the app that a new message was available and afterwards would then share commands with the Facebook server to have that information pushed to Messenger. Messenger had to download the entire conversation again and again instead of only the last message, which is not good for performance, but now with Iris, only the latest messages that haven’t been retrieved will be pushed to the app, making the experience much smoother with less build up on Facebook’s back end.

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