Just so people aren't left wondering why there's been no response - the best way to approach this is being discussed amongst the core developers at the moment. It just co-incides with three of them - Alex, Henrik and Robert- in transit to London. That said, if anyone else has anything to offer on this topic - criticisms, questions, etc - then please feel free to ask here. Adrian On Wed, Feb 27, 2008, Mark Nottingham wrote: > Hello Squid folk, > > I maintain Yahoo!'s internal build of Squid, and serve as a resource > for the various Y! properties that use it. > > We currently only use Squid-2, and don't have plans to migrate to > Squid-3; although ESI, ICAP as well as eCAP look interesting, there > are too many critical features (e.g., collapsed fowarding, refresh > stale hit, full Vary/ETag support, not to mention several things in > 2.7DEVEL0) missing for us to use it. Additionally, anecdotal evidence > shows that it's still too unstable and slow for production use where > these aspects are important; or at least, there is enough doubt about > them to make switching too risky for too little benefit. > > I know that there's a lot of water under the bridge WRT -2 vs -3, and > don't want to stir up what must seem like a very old discussion to the > developers. However, there's not much clarity about the situation WRT > 2 vs 3, and we've been in this state for a long period of time. > > Specifically, a few questions for the developers of Squid: > > * Besides the availability of *CAP and ESI -- which are very > specialised, and of interest only to a subset of Squid users -- is > there any user-visible benefit to switching to -3? > > * What do the developers consider to be a success metric for -3? > I.e., when will maintenance on -2 stop? > > * Until that time, what is the development philosophy for Squid-2? > Will it be only maintained, or will new features be added / rewrites > be done as (possibly sponsored) resources are available? Looking at > <http://wiki.squid-cache.org/RoadMap/Squid2 >, it seems to be the latter; > is that the correct interpretation? > > * If that success metric is not reached, what is the contingency > plan? > > * How will these answers change if a substantial number of users > willingfully choose to stay on -2 (and not just because they neglect > to update their software)? > > > Also, a few questions for -users: > > * Who is using -3 in production now? How are you using it (load, > use case, etc.) and what are your experiences? > > * Who is planning to use -3 soon? Why? > > * Who is not planning to use -3 soon? Why not? > > > Thanks, > > -- > Mark Nottingham mnot@xxxxxxxxxxxxx > -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA -