A comment on the "announcement", first coinsmarkets needs devops not admins, software developers not coder.
get a team and use agile methodology scrum or kanban to become able to fast react to change. Here are some tips:

 1. Use CDN for resources(images,css,js,etc).
 2. Minify css,js. less size means less time to load and results in faster site.
 3. Resize images, e.g. Doge image is 399 KB (256 px X 256 px), floppycoin 540KB. Do thumb images 32px and 256px optimize the size and only load what is needed.
 4. Remove all broken links (404).
 5. Do you need really 492 requests to load the website?
 6. cache images 14400 seconds not enough.

 29.5MB transfer for site loading is a lot even if coinsmarkets have dedicated 10Gbps

 finally in the "announcement" where is the date when the site will be up again.