Skip cdx dedup for volatile URLs with session params

A lot of cdx dedup requests fail. Checking production logs, we see that we try to dedup URLs that are certainly volative and session-specific. We can skip them to reduce cdx dedup load. We won't find any matches anyway since they contain session-specific vars.

We suggest to skip cdx dedup for URL that include JSESSIONID=, session= or sess=. These are common session URL params, there could be many-many more.

Example URLs:

/session/683/urii8zej/xhr_streaming?JSESSIONID=dv0jkbk2-8xm9t9tf-7wp8lx0m-x4vb22ys

https://tw.popin.cc/popin_discovery/recommend?mode=new&url=https%3A%2F%2Fwww.nownews.com%2Fcat%2Fpolitics%2Fmilitary%2F&&device=pc&media=www.nownews.com&extra=other&agency=cnplus&topn=100&ad=100&r_category=all&country=tw&redirect=false&infinite=nownews&infinite_domain=m.nownews.com&piuid=43757d2474f09288b8410a9f2a40acf1&info=eyJ1c2VyX3RkX29zIjoib3RoZXIiLCJ1c2VyX3RkX29zX3ZlcnNpb24iOiIwLjAuMCIsInVzZXJfdGRfYnJvd3NlciI6IkNocm9tZSIsInVzZXJfdGRfYnJvd3Nlcl92ZXJzaW9uIjoiNzQuMC4zNzI5IiwidXNlcl90ZF9zY3JlZW4iOiIxNjAweDEwMDAiLCJ1c2VyX3RkX3ZpZXdwb3J0IjoiMTEwMHg3ODQiLCJ1c2VyX3RkX3VzZXJfYWdlbnQiOiJNb3ppbGxhLzUuMCAoWDExOyBMaW51eCB4ODZfNjQpIEFwcGxlV2ViS2l0LzUzNy4zNiAoS0hUTUwsIGxpa2UgR2Vja28pIFVidW50dSBDaHJvbWl1bS83NC4wLjM3MjkuMTY5IENocm9tZS83NC4wLjM3MjkuMTY5IFNhZmFyaS81MzcuMzYiLCJ1c2VyX3RkX3JlZmVycmVyIjoiIiwidXNlcl90ZF9wYXRoIjoiL2NhdC9wb2xpdGljcy9taWxpdGFyeS8iLCJ1c2VyX3RkX2NoYXJzZXQiOiJ1dGYtOCIsInVzZXJfdGRfbGFuZ3VhZ2UiOiJlbi11cyIsInVzZXJfdGRfY29sb3IiOiIyNC1iaXQiLCJ1c2VyX3RkX3RpdGxlIjoiJUU4JUJCJThEJUU2JUFEJUE2JTIwJTdDJTIwTk9XbmV3cyUyMCVFNCVCQiU4QSVFNiU5NyVBNSVFNiU5NiVCMCVFOCU4MSU5RSIsInVzZXJfdGRfdXJsIjoiaHR0cHM6Ly93d3cubm93bmV3cy5jb20vY2F0L3BvbGl0aWNzL21pbGl0YXJ5LyIsInVzZXJfdGRfcGxhdGZvcm0iOiJMaW51eCB4ODZfNjQiLCJ1c2VyX3RkX2hvc3QiOiJ3d3cubm93bmV3cy5jb20iLCJ1c2VyX2RldmljZSI6InBjIiwidXNlcl90aW1lIjoxNTYyMDAxMzkyNzY2fQ==&session=13927861b5403&callback=_p6_8e102dd0c975

http://c.statcounter.com/text.php?sc_project=4092884&java=1&security=10fe3b6b&u1=915B47A927524F10185B2F074074BDCB&sc_random=0.017686960888044556&jg=310&rr=1.1.1.1.1.1.1.1.1&resolution=1600&h=1000&camefrom=&u=http%3A//buchlatech.blogspot.com/search/label/prototype&t=Buchla%20Tech%3A%20prototype&rcat=d&rdomo=d&rdomg=310&bb=0&sc_snum=1&sess=cfa820&p=0&text=2

internetarchive / warcprox

Skip cdx dedup for volatile URLs with session params #139