> For the complete documentation index, see [llms.txt](https://stephen-tsoi.gitbook.io/stephen-tsoi-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://stephen-tsoi.gitbook.io/stephen-tsoi-docs/messaging-technology/messaging-bus-comparison-series/comparision-18-scalability.md).

# Comparision #18: Scalability

<table data-header-hidden><thead><tr><th valign="top"></th><th valign="top"></th></tr></thead><tbody><tr><td valign="top">Product</td><td valign="top">Solution</td></tr><tr><td valign="top">ActiveMQ</td><td valign="top">Horizontal scaling</td></tr><tr><td valign="top">AWS SQS Queue</td><td valign="top"> </td></tr><tr><td valign="top">Azure Queue Storage</td><td valign="top"> </td></tr><tr><td valign="top">Azure Service Bus</td><td valign="top"> </td></tr><tr><td valign="top">EMQX</td><td valign="top"><p>Cluster EMQX nodes for horizontal scaling.</p><p>Use shared subscriptions for load balancing.</p></td></tr><tr><td valign="top">IBM MQ</td><td valign="top">Use cluster scaling, but it doesn’t support the HA or DR</td></tr><tr><td valign="top">Kafka</td><td valign="top">Scale the broker by distribution design</td></tr><tr><td valign="top">RabbitMQ</td><td valign="top"><p>Use clustering or federation for scaling.</p><p>Apply sharding plugin for large workloads.</p></td></tr><tr><td valign="top">Solace PubSub+</td><td valign="top">Event Mesh via DMR or VPM Bridging</td></tr><tr><td valign="top">Tibco EMS</td><td valign="top">Deploy multiple servers and use routing bridges.</td></tr></tbody></table>


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