fix: Add accurate concurrent executions count to executions list (#19249)

packages/@n8n/db/src/repositories/__tests__/execution.repository.test.ts

@@ -291,4 +291,18 @@ describe('ExecutionRepository', () => {
 			);
 		});
 	});
+
+	describe('getConcurrentExecutionsCount', () => {
+		test('should count running executions with mode webhook or trigger', async () => {
+			const mockCount = 5;
+			entityManager.count.mockResolvedValueOnce(mockCount);
+
+			const result = await executionRepository.getConcurrentExecutionsCount();
+
+			expect(entityManager.count).toHaveBeenCalledWith(ExecutionEntity, {
+				where: { status: 'running', mode: In(['webhook', 'trigger']) },
+			});
+			expect(result).toBe(mockCount);
+		});
+	});
 });

packages/@n8n/db/src/repositories/execution.repository.ts

@@ -1137,4 +1137,16 @@ export class ExecutionRepository extends Repository<ExecutionEntity> {
 
 		return executions.map(({ id }) => id);
 	}
+
+	/**
+	 * The number of executions that are running and count towards the concurrent executions limit.
+	 * Concurrency control only applies to executions started from a webhook or trigger node.
+	 */
+	async getConcurrentExecutionsCount() {
+		const concurrentExecutionsCount = await this.count({
+			where: { status: 'running', mode: In(['webhook', 'trigger']) },
+		});
+
+		return concurrentExecutionsCount;
+	}
 }