<h1 id="horizontal-vs-vertical-scaling">Horizontal vs Vertical Scaling<a aria-hidden="true" class="anchor-heading icon-link" href="#horizontal-vs-vertical-scaling"></a></h1>
<p>Horizontal scaling is when you add more machines and distribute the work across them - parallelization</p>
<p>Vertical scaling is when you improve performance of the current machines - better CPUs, GPUs with more RAM, lower latency so on.</p>
<p>Practically if a system is horizontally scalable it is better as it is easier to do - you just buy new machines. Improving current ones requires research/optimization and so on.</p>
<h1 id="horizontal-scaling">Horizontal scaling<a aria-hidden="true" class="anchor-heading icon-link" href="#horizontal-scaling"></a></h1>
<ul>
<li>more complex management</li>
<li>no required downtime, no need to stop current machines when you add more</li>
<li>higher fault tolerance</li>
</ul>
<h1 id="vertical-scaling">Vertical scaling<a aria-hidden="true" class="anchor-heading icon-link" href="#vertical-scaling"></a></h1>
<ul>
<li>easier management</li>
<li>required downtime</li>
<li>single point of failure</li>
<li>limited by hardware capacity</li>
</ul>

Horizontal vs Vertical Scaling


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