How should i design a wordpress backend + react + java frontend app?
<p>For about 2 weeks, i'm trying to design a system, should consider below requires;</p>

<ul>
<li>We have already an frontend app, has been written in java (we don't want to change it)</li>
<li>we want to make our backend system with wordpress</li>
<li>our UI team will design ui in react</li>
<li>I should consider SEO and other standard web requirements</li>
</ul>

<p><strong>1st design:</strong> </p>

<p>I will get rests from WP-backend (or directly from database) and with java build-in time js, I will compile react in my app</p>

<p><strong>2nd Design:</strong></p>

<p>Java will make a request to nodejs (working in :3000) with datas from wp-backend (or database) and node with express + react will render an html and give output. Java will take this output and place it in view side.</p>

<p><strong>3rd Design ?</strong></p>

<p>I couldn't find the best way of this job. Can someone help me to find best design with some explanations ? </p>

<p>Best,</p>