rewrite counter inrease queue

src/data/User.js

@@ -180,19 +180,10 @@ class User {
   }
 
   incrementPixelcount(amount = 1) {
-    if (!this.id) {
-      return;
+    const { id } = this;
+    if (id) {
+      incrementPixelcount(id, amount);
     }
-    /*
-     * incrementation gets queued to be processed
-     * in batches
-     */
-    if (!this.queuedPxlIncrement) {
-      this.queuedPxlIncrement = amount;
-      incrementPixelcount(this);
-      return;
-    }
-    this.queuedPxlIncrement += amount;
   }
 
   async getTotalPixels() {

src/data/sql/RegUser.js

@@ -208,58 +208,50 @@ export async function getNamesToIds(ids) {
  * increment user pixelcount in batches sequentially
  * Queue directly accesses queuedPxlIncrement in user object
  */
-const incrementQueue = [];
+let incrementQueue = {};
 let pushLoop = null;
 const incrementLoop = async () => {
-  if (!incrementQueue.length) {
+  const idKeys = Object.keys(incrementQueue);
+  if (!idKeys.length) {
     pushLoop = null;
     return;
   }
-  try {
-    incrementQueue.sort((a, b) => {
-      const aa = a.queuedPxlIncrement;
-      const ba = b.queuedPxlIncrement;
-      if (aa < ba) return -1;
-      if (aa > ba) return 1;
-      return 0;
-    });
-    let cnt = incrementQueue.length;
-    let user = incrementQueue.pop();
-    while (cnt) {
-      cnt -= 1;
-      const amount = user.queuedPxlIncrement;
-      user.queuedPxlIncrement = 0;
-      const ids = [user.id];
-      while (cnt) {
-        cnt -= 1;
-        user = incrementQueue.pop();
-        if (user.queuedPxlIncrement !== amount) {
-          break;
-        }
-        user.queuedPxlIncrement = 0;
-        ids.push(user.id);
-      }
+  const queue = incrementQueue;
+  incrementQueue = {};
+  const orderedCnts = {};
+  idKeys.forEach((id) => {
+    const cnt = queue[id];
+    const cntArr = orderedCnts[cnt];
+    if (cntArr) {
+      cntArr.push(id);
+    } else {
+      orderedCnts[cnt] = [id];
+    }
+  });
+  Object.keys(orderedCnts).forEach(async (cnt) => {
+    const ids = orderedCnts[cnt];
+    try {
       // eslint-disable-next-line no-await-in-loop
       await RegUser.increment(['totalPixels', 'dailyTotalPixels'], {
-        by: amount,
+        by: cnt,
         where: {
           id: ids,
         },
         silent: true,
         raw: true,
       });
+    } catch (err) {
+      logger.warn(`Error on pixel increment: ${err.message}`);
     }
-  } catch (err) {
-    logger.warn(`Error on pixel increment: ${err.message}`);
-    incrementQueue.forEach((q) => {
-      if (q) q.queuedPxlIncrement = 0;
-    });
-    incrementQueue.length = 0;
-  }
+  });
   pushLoop = setTimeout(incrementLoop, 250);
 };
-export async function incrementPixelcount(user) {
-  incrementQueue.push(user);
+export async function incrementPixelcount(id, by) {
+  if (incrementQueue[id]) {
+    incrementQueue[id] += by;
+  } else {
+    incrementQueue[id] = by;
+  }
   if (!pushLoop) {
     pushLoop = setTimeout(incrementLoop, 0);
   }