Building an Auto Scaling WordPress Website on Alibaba Cloud

0.0.201

Overview

For online businesses of websites deployed using WordPress, traffic fluctuations are unavoidable. They can occur at predictable and unpredictable times, and customers may experience high latency if the traffic volume spikes during a certain period. It is crucial to deploy an architecture that automatically scales in response to traffic volume changes to provide a consistently high performance service with minimized cost and effort.

This solution allows you to automatically adjust the compute capacity in response to traffic fluctuations and helps you maintain a balance between performance and cost with scaling rules. It provides high availability and fault tolerance by evenly distributing ECS instances across zones as the compute capacity is scaled, supports database scaling to meet increased data demands, and supports Redis caching across zones to ease the load on the database.

Reference Architecture

The following architecture diagram demonstrates how to deploy a WordPress website and applications on an auto scaling architecture. In the scenario demonstrated by this diagram:

Auto Scaling adjusts the number of ECS instances to ensure optimal performance with minimized costs.

ECS instances are deployed across two zones to ensure high application availability.

Data caching is provided by an ApsaraDB for Redis instance in a multi-zone deployment.