A critical vulnerability was discovered in React Server Components (Next.js). Our systems remain protected but we advise to update packages to newest version. Learn More

Scott Reed
Jul 10, 2019
  2885
(5 votes)

View DXC Cache Status Easier In DevTools

When running on the DXC Episerver uses https://www.cloudflare.com/ for it's CDN caching to increase performance.

As most should know when viewing a request in DevTools you can open the request in DevTools and look at the headers and check cf-cache-status to check if a resource has been cached by checking for a HIT response.

We can then look at the cache cache-control header to see for how long e.g. public, max-age 86400 is cached for 24 hours with a HIT to say it's cached.

However it's a bit of a pain to have to click in to all of these, so let's use a not as well known feature of being able to add custom headers to the network requests panel.

Step 1.

In network on DevTools right click the headers area as such

Step 2.

Navigate to Response Header -> Manage Custom Headers

Step 3.

Add in the header cf-cache-status which indicates if it's been cached

Result

Now you'll see a HIT or MISS or Empty (If not going through CloudFlare) giving a lot easier way to see if your resources are being cached.

Easy :-)

Jul 10, 2019

Comments

Jul 10, 2019 02:24 PM

Nice and simple tip, Scott. 👍

Jacob Pretorius
Jacob Pretorius Jul 11, 2019 10:27 AM

That's useful thanks for the tip!

Ravindra S. Rathore
Ravindra S. Rathore Jul 15, 2019 12:29 PM

Very helpful tip 👍

Please login to comment.
Latest blogs
Building simple Opal tools for product search and content creation

Optimizely Opal tools make it easy for AI agents to call your APIs – in this post we’ll build a small ASP.NET host that exposes two of them: one fo...

Pär Wissmark | Dec 13, 2025 |

CMS Audiences - check all usage

Sometimes you want to check if an Audience from your CMS (former Visitor Group) has been used by which page(and which version of that page) Then yo...

Tuan Anh Hoang | Dec 12, 2025

Data Imports in Optimizely: Part 2 - Query data efficiently

One of the more time consuming parts of an import is looking up data to update. Naively, it is possible to use the PageCriteriaQueryService to quer...

Matt FitzGerald-Chamberlain | Dec 11, 2025 |

Beginner's Guide for Optimizely Backend Developers

Developing with Optimizely (formerly Episerver) requires more than just technical know‑how. It’s about respecting the editor’s perspective, ensurin...

MilosR | Dec 10, 2025