Basic profile caching

1 files changed, 14 insertions, 5 deletions

diff --git a/vnext/src/api/index.js b/vnext/src/api/index.js
index f88695f2..aa0ddc6e 100644
--- a/vnext/src/api/index.js
+++ b/vnext/src/api/index.js
@@ -213,6 +213,8 @@ export function markReadTracker(msg, visitor) {
     return `${apiBaseUrl}/api/thread/mark_read/${msg.mid}-${msg.rid || 0}.gif?hash=${visitor.hash}`;
 }
 
+let profileCache = {};
+
 /**
  * Fetch user profile
  *
@@ -220,10 +222,17 @@ export function markReadTracker(msg, visitor) {
  */
 export function fetchUserUri(profileUrl) {
     return new Promise((resolve, reject) => {
-        client.get(profileUrl, {
-            headers: {
-                'Accept': 'application/ld+json'
-            }
-        }).then(response => resolve(response)).catch(reject);
+        if (profileCache[profileUrl]) {
+            resolve(profileCache[profileUrl]);
+        } else {
+            client.get(profileUrl, {
+                headers: {
+                    'Accept': 'application/ld+json'
+                }
+            }).then(response => {
+                profileCache[profileUrl] = response.data;
+                resolve(response.data);
+            }).catch(reject);
+        }
     });
 }