Pingdom tools told me website was slow. I noticed some fonts took way too long to load.

See also https://designsbytierney.com/2017/06/optimize-google-font-delivery-wordpress-divi-theme/

How to see if cache is working

$ curl -I https://digitaleinspiratie.com/
HTTP/2 200
date: Wed, 07 Apr 2021 13:03:38 GMT
content-type: text/html; charset=UTF-8
set-cookie: __cfduid=d42c8c50b5222cc15b4cb996997cde8d71617800618; expires=Fri, 07-May-21 13:03:38 GMT; path=/; domain=.digitaleinspiratie.com; HttpOnly; SameSite=Lax
vary: Accept-Encoding
cache-control: public, s-maxage=216000
x-powered-by: PHP/7.3.27
x-stackcache-cachable: yes
link: <https://digitaleinspiratie.com/wp-json/>; rel="https://api.w.org/", <https://digitaleinspiratie.com/wp-json/wp/v2/pages/838>; rel="alternate"; type="application/json", <https://digitaleinspiratie.com/>; rel=shortlink
x-provided-by: StackCDN 1.0
x-provided-by: StackCDN 1.0
x-origin-cache-status: MISS
x-backend-server: web45.hosting.stackcp.net
x-service-level: wordpress
x-cdn-cache-status: HIT
x-via: LHR4
cf-cache-status: DYNAMIC
cf-request-id: 094e077a63000040a843b97000000001
expect-ct: max-age=604800, report-uri="https://report-uri.cloudflare.com/cdn-cgi/beacon/expect-ct"
report-to: {"max_age":604800,"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report?s=WVSfmsIBBpng%2BV%2Fs01v95nxD25My31ajsUJ99M4EqJBbDRehrBarmOgvdKHpSY5U3USCa8prlDG4A1zfMb%2Bhk3KS1A3%2BYmloaOo66FarQx8b8ZVvWKK1"}],"group":"cf-nel"}
nel: {"max_age":604800,"report_to":"cf-nel"}
server: cloudflare
cf-ray: 63c3750a3c4e40a8-LHR
alt-svc: h3-27=":443"; ma=86400, h3-28=":443"; ma=86400, h3-29=":443"; ma=86400