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- RT @jedisct1: Counting unique visitors without using cookies, UIDs or fingerprinting. notes.normally.com/cookieless-uni… 3 months ago
- IPv4 price forecasts for 2022-2023 lassekarstensen.wordpress.com/2021/09/08/ipv… 1 year ago
- RT @cryptopathe: GPRS (2G & 3G data) encryption schemes GEA-1 and GEA-2 have a security of 2^40 (due to a backdoor) and 2^45 (apparently un… 1 year ago
- RT @bcrypt: merry xss-mas! here’s one from chessbase.com that was fixed recently. send <script>if ($('.cbChatUserName')[0].innerT… 2 years ago
- RT @pancak3lullz: #BMW customer data up for sale @BMW @BMWUSA https://t.co/EJJQjhegQZ 2 years ago
- RT @haveibeenpwned: New breach: Foodora had 583k unique customers exposed in 2016. Data included names, delivery addresses, phone numbers a… 2 years ago
Tag Archives: varnish
HTTP Live Streaming (HLS) tools
Delivering video over HTTP is up and coming. The two protocols that seem to be winning (currently) are HLS and HDS. These are my notes from playing around with HLS. If you want to play HLS on Linux, this python … Continue reading
Varnish Cache development news
Short update on activities in Varnish cache development: Work is being done on getting access to the request BODY inside Varnish. This feature has been requested for a while, particularly by the security.vcl guys. See daf0e2c. The 2013Q1 Varnish Developer Day will … Continue reading
Varnish trick: Serve stale content while refetching
Here is a small trick we recently implemented for a customer: The main premise was: No clients should have to wait while the backend works. If a request is a miss, give the client a slightly stale/old page instead, and fetch … Continue reading
New Varnish VMOD: Softer purges / invalidations
With the new softpurge vmod you can do cache invalidation in Varnish that only affects objects if your backend is up. This means that you can purge all you want, and in the normal case everything works as expected, but if … Continue reading
Varnishncsa and std.log()
New in Varnish 3.0.3rc1 is that you can put arbitrary log lines from VCL into the varnishncsa output. This can be used for funky stuff like logging the session cookie along with the request. Let’s say you have the following … Continue reading
Mobile device detection in Varnish
As part of my DAY JOB[tm] I’ve been working on device detection with Varnish. There is some content about this on blogs here and there, but no single place to get rulesets or VCL. We want to fix that by … Continue reading
Blog of Lasse Karstensen 