From e453f3bf5ba223ec696f5ae71f169f2699b67510 Mon Sep 17 00:00:00 2001
From: Kuchizu <legolashacker0@gmail.com>
Date: Wed, 6 May 2026 19:17:50 +0300
Subject: [PATCH 1/3] perf(api): apply $limit before $lookup in dailyEvents
 pipeline when no content filters

---
 src/models/eventsFactory.js | 39 +++++++++++++++++++++++++------------
 1 file changed, 27 insertions(+), 12 deletions(-)

diff --git a/src/models/eventsFactory.js b/src/models/eventsFactory.js
index c552bc41..9424440d 100644
--- a/src/models/eventsFactory.js
+++ b/src/models/eventsFactory.js
@@ -403,6 +403,17 @@ class EventsFactory extends Factory {
       return { 'event.assignee': String(assignee) };
     })();
 
+    /** When false, $limit can move before the $lookups. */
+    const hasContentFilters =
+      escapedSearch.length > 0 ||
+      Boolean(release) ||
+      Boolean(assignee) ||
+      Object.keys(matchFilter).length > 0;
+
+    if (!hasContentFilters) {
+      pipeline.push({ $limit: limit + 1 });
+    }
+
     pipeline.push(
       /**
        * Left outer join original event on groupHash field
@@ -434,21 +445,25 @@ class EventsFactory extends Factory {
           path: '$repetition',
           preserveNullAndEmptyArrays: true,
         },
-      },
-      {
-        $match: {
-          ...matchFilter,
-          ...searchFilter,
-          ...releaseFilter,
-          ...assigneeFilter,
-        },
-      },
-      { $limit: limit + 1 },
-      {
-        $unset: 'groupHash',
       }
     );
 
+    if (hasContentFilters) {
+      pipeline.push(
+        {
+          $match: {
+            ...matchFilter,
+            ...searchFilter,
+            ...releaseFilter,
+            ...assigneeFilter,
+          },
+        },
+        { $limit: limit + 1 }
+      );
+    }
+
+    pipeline.push({ $unset: 'groupHash' });
+
     const cursor = this.getCollection(this.TYPES.DAILY_EVENTS).aggregate(pipeline);
     const result = await cursor.toArray();
 

From 8fd1cab51a0f8b08858647b83145ae4e053cbde3 Mon Sep 17 00:00:00 2001
From: Kuchizu <legolashacker0@gmail.com>
Date: Wed, 6 May 2026 19:17:50 +0300
Subject: [PATCH 2/3] perf(api): support optional projection in DataLoader
 batch fns

---
 src/dataLoaders.ts | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/src/dataLoaders.ts b/src/dataLoaders.ts
index 377bd702..cb5c0a2e 100644
--- a/src/dataLoaders.ts
+++ b/src/dataLoaders.ts
@@ -68,12 +68,19 @@ export default class DataLoaders {
    * Batching function for resolving entities from their ids
    * @param collectionName - collection name to get entities
    * @param ids - ids for resolving
+   * @param projection - optional mongo projection to limit returned fields
    */
   private async batchByIds<T extends { _id: ObjectId }>(
     collectionName: string,
-    ids: ReadonlyArray<string>
+    ids: ReadonlyArray<string>,
+    projection?: Record<string, 0 | 1>
   ): Promise<(WithId<T> | null)[]> {
-    return this.batchByField<T, '_id'>(collectionName, '_id', ids.map(id => new ObjectId(id)));
+    return this.batchByField<T, '_id'>(
+      collectionName,
+      '_id',
+      ids.map(id => new ObjectId(id)),
+      projection
+    );
   }
 
   /**
@@ -81,6 +88,7 @@ export default class DataLoaders {
    * @param collectionName - collection name to get entities
    * @param fieldName - field name to resolve
    * @param values - values for resolving
+   * @param projection - optional mongo projection to limit returned fields
    */
   private async batchByField<
     T extends Record<string, any>,
@@ -88,7 +96,8 @@ export default class DataLoaders {
   >(
     collectionName: string,
     fieldName: FieldType,
-    values: ReadonlyArray<T[FieldType]>
+    values: ReadonlyArray<T[FieldType]>,
+    projection?: Record<string, 0 | 1>
   ): Promise<(WithId<T> | null)[]> {
     type Doc = WithId<T>;
     const valuesMap = new Map<string, FieldType>();
@@ -99,9 +108,10 @@ export default class DataLoaders {
 
     const queryResult = await this.dbConnection
       .collection<T>(collectionName)
-      .find({
-        [fieldName]: { $in: Array.from(valuesMap.values()) },
-      } as any)
+      .find(
+        { [fieldName]: { $in: Array.from(valuesMap.values()) } } as any,
+        projection ? { projection } : {}
+      )
       .toArray();
 
     /**

From 16b0e23cd0b6fec275c7b9c2665ebdff99e0e2bd Mon Sep 17 00:00:00 2001
From: github-actions <41898282+github-actions[bot]@users.noreply.github.com>
Date: Wed, 6 May 2026 16:22:06 +0000
Subject: [PATCH 3/3] Bump version up to 1.5.1

---
 package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package.json b/package.json
index b9aaa8e8..d484a908 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "hawk.api",
-  "version": "1.5.0",
+  "version": "1.5.1",
   "main": "index.ts",
   "license": "BUSL-1.1",
   "scripts": {