[ENG ]Xen vs. KVM security architecture comparison [from forum.opennet.ru - "Qubes - новая безопасная операционная система на базе Linux ..."]

http://www.opennet.ru/openforum/vsluhforumID3/65661.html#23 Notes (exert) from Joanna Rutkowska recent paper comparing KVN and XEN architectures from security and design standpoint

ArchitectNotes – Varnish [what's wrong with caching things in memory]

http://varnish-cache.org/wiki/ArchitectNotes excellent notes about app design, and what can happen if an app tries to implement its own memory management

Message Queue Evaluation Notes - Second Life Wiki

http://wiki.secondlife.com/wiki/Message_Queue_Evaluation_Notes Second Life notes about Message Queue Systems

mjg59: ACPI general purpose events

http://mjg59.livejournal.com/117532.html article by Matthew Garrett that actually explains how ACPI works

High Scalability - High Scalability - Facebook's Memcached Multiget Hole: More machines != More Capacity

http://highscalability.com/blog/2009/10/26/facebooks-memcached-multiget-hole-more-machines-more-capacit.html also see http://dormando.livejournal.com/521163.html Describing some problems with performance/scalability you may have if you partition/shard your data by hash. ( that’s what memcached does.) You may hit the cpu bound limit from the amount of requests that few very popular keys receive. Currently, there is now common way around this (perhaps because very very few sites scale to the point when this becomes an issue )

www.sdsqlug.org/presentations/May2009/MySpace_DB_Overview.pptx

http://www.sdsqlug.org/presentations/May2009/MySpace_DB_Overview.pptx myspace architecture presentation, talks about how to myspace solves its database issues

Joshua Zhu’s Blog » Nginx Internals (Slides & Video)

http://blog.zhuzhaoyuan.com/2009/09/nginx-internals-slides-video/ very good presentation slides explaining nginx internals, such as main architecture, main event loops, core modules, processing pipelines, etc. Also there is a video of the talk , but it is mandarin, so YMMV :-)

Yahoo!'s PNUTS Database: Too Hot, Too Cold or Just Right? | High Scalability

http://highscalability.com/yahoo-s-pnuts-database-too-hot-too-cold-or-just-right writeup on yahoo PTUNS (distributed database ). Also, see the original paper if you are interested.

Re: [PATCH] xen: core dom0 support [LWN.net] / difference between XEN and KVM /

http://lwn.net/Articles/321702/ Message to Kernel Mailing List about differences between XEN and KVM .

Memory Translation and Segmentation : Gustavo Duarte

http://duartes.org/gustavo/blog/post/memory-translation-and-segmentation very goom sum-up about memory mechanism in modern x86 machines. For more elabored and detailed info