In a real-time multiplayer editing environment like Figma, what is the primary method used to ensure all users see the latest changes instantly?
Think about how instant communication happens in chat apps.
WebSocket connections allow the server to push updates instantly to all connected users, enabling real-time collaboration without delay.
Which data model approach best supports conflict resolution in real-time multiplayer editing?
Consider how automatic conflict resolution can be done without user intervention.
Last write wins uses timestamps to decide which change is the most recent, automatically resolving conflicts in real-time editing.
Given a table Editors with columns UserID, LastActiveTime, and DocumentID, which DAX measure correctly counts the number of unique active editors on a document in the last 5 minutes?
Use CALCULATE with DISTINCTCOUNT and a FILTER on recent activity.
Option A correctly filters editors active in the last 5 minutes and counts unique UserIDs.
Which visualization best shows the number of active users editing a document over the last hour, updating every minute?
Think about how to show changes over time clearly.
A line chart is ideal for showing trends over time, such as active user counts updating every minute.
In a real-time editing system, users report that sometimes their changes do not appear for others immediately. The code snippet below handles update broadcasting:
function broadcastUpdate(update) {
clients.forEach(client => {
client.send(JSON.stringify(update));
});
}What is the most likely cause of the delay?
Consider what happens if a client is no longer connected but still in the list.
If the clients list includes disconnected users, sending messages to them may fail silently, causing delays or missed updates for active users.