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Incoming/Outgoing data: 60 MB/s High-Level Design Since each incoming message needs to go out to another user, we will need the same bandwidth, 60 MB/s, for both upload and download. If our service is getting 5 TB of data every day, this will give us approximately 50 MB of incoming data for each second. Also, the above calculations didn’t keep data compression and replication into consideration. Other than the chat messages, we would also need to store users’ information, messages’ metadata (ID, Timestamp, etc.). Let’s assume that, on average, a message is 1 KB, so to store all the messages for one day, we would need 5TB of storage.Īlthough Facebook Messenger stores all previous chat history, we would need approximately 10 petabytes of storage just for estimation to save five years of chat history. Let’s assume that we have 500 Million daily active users, and on average, each user sends 10 messages daily this gives us 5 billion messages per day. Push notifications: Messenger should be able to notify users of new messages when they are offline.Group Chats: Messenger should support multiple people talking to each other in a group.Messenger’s high availability is desirable we can tolerate lower availability in the interest of consistency.Our system should be highly consistent users should see the same chat history on all their devices.Users should have a real-time chat experience with minimum latency.Messenger should support the persistent storage of chat history.Messenger should keep track of the online/offline statuses of its users.Messenger should support one-on-one conversations between users.Our Messenger should meet the following requirements: Functional Requirements: Messenger users can chat with their Facebook friends both from cell phones and their websites.
#MESSENGER FACEBOOK UPDATE#
The most useful ones include London City Airport which has a chat bot to update you about your upcoming flights, Sous-Chef which will give you useful suggestions about what to cook, and restaurant chains with chat bots for hassle-free table bookings (including Pizza Express or even OpenTable).Facebook Messenger is a software application that provides text-based instant messaging services to its users. Just tap the compass icon on the app to find them. Chat bots are used by businesses as automated customer service agents. Use Facebook Messenger as your personal assistantĬhat bots on your messenger app can do a whole host of things for you, like manage your holidays or get useful recommendations. Then, scroll down to SMS where you can turn this on and off. On the messenger app, click on your profile picture on the top left of the app. Putting everything in one app will make keeping track of conversations much less hassle.
#MESSENGER FACEBOOK ANDROID#
If you use an Android phone, you can now see all of your text messages and your Facebook messages in one place. Texts and Facebook messages can be in the same place IPhones will be easier to see at night 7. To activate it, tap your profile picture on your messenger and toggle on the Dark Mode setting. If you don’t have an iPhone or you just can’t wait for the update, Facebook Messenger has its own Dark Mode. It'll feature their new Dark Mode, which will adjust the colours on your phone screen to make it easier to see at night. Take the pressure off your eyes at nightĪpple just announced the new iOS 13 which will be launching in the autumn. They can see where you are, even if you move! 6. Select Location, then Share Live Location. Open a chat window with them in the Facebook Messenger app and click the four circles at the bottom to head to the menu. Have you ever struggled to find someone out and about, or maybe they've got lost trying to find you? You can show them exactly where you are on a map and vice versa. Select files and photos to send from there, easy! 5. Quickly and effortlessly transfer files and photos to your Facebook friends (or between your own devices) by opening up a chat window and clicking the paperclip along the bottom bar.