uromar
11/06/2013, 19h21

Je suis donc passe sur le CDN d'Amazon : CloudFront, qui prend en compte les etags et les last-modified.
HTTP/1.1 200 OK Server: nginx Date: Fri, 31 May 2013 14:43:21 GMT Content-Type: image/jpeg Content-Length: 40235 Last-Modified: Fri, 31 May 2013 13:33:57 GMT Connection: keep-alive Etag: "51a8a6c5-9d2b" Expires: Sun, 30 Jun 2013 14:43:21 GMT Cache-Control: max-age=2592000 Accept-Ranges: bytes
HTTP/1.1 200 OK Content-Type: image/jpeg Last-Modified: Tue, 11 Oct 2011 16:48:15 GMT Etag: "4e94734f-0" Expires: Sun, 30 Jun 2013 13:20:08 GMT Proxy-Connection: close Content-Length: 0 Accept-Ranges: bytes Date: Fri, 31 May 2013 14:51:49 GMT Connection: keep-alive X-Cacheable: Matched cache X-CDN-Geo: tor X-CDN-Geo-IP: 46.105.194.37