2,303 reputation
79
bio website marksverbiage.blogspot.com
location Reading, United Kingdom
age 39
visits member for 5 years, 6 months
seen Nov 28 '12 at 17:32
Experienced developer; I use stuff like MySQL, perl, work on pretty large systems.

Nov
29
answered Asymmetrically encrypted filesystem
Nov
25
comment Search-engine friendly DNS redirection
They are not redirects, they are aliases. They handle the way names are translated into addresses, and don't affect what happens to web pages; a CNAME can be used to direct to a server which does virtual hosting and hosts different sites from another CNAME - I've used this technique lots myself.
Nov
24
answered Very slow mysql
Nov
23
answered Query causes mysql server to go away
Nov
21
comment su to user that doesn't exist any longer?
Yes you should be able to temporarily re-create the user; this should not involve editing any files, you can do it with useradd.
Nov
17
answered (*nix) Cloud/cluster solutions for scalable web-services
Nov
9
answered Apache on FreeBSD not responsive but not busy
Oct
30
answered How to scale down for low memory server?
Oct
27
answered ddos deflate adds 0.0.6.207 to ipfilter
Oct
27
answered What is the easiest way to check how large my database is (disk-space)?
Oct
24
comment How fill a database mysql with examples data?
Unfortunately you need to be far more specific than this - what KIND of data to put into which tables - and writing scripts to generate it can be quite an onerous task. I spent three months on this last year.
Oct
20
answered How to run a program inside chroot with stdin/stdout available to caller?
Oct
20
answered How to kill a <defunct> process with parent 1
Oct
19
answered How to declare an interface as down under defined circumstances?
Oct
19
answered Does mySQL Replication: Master DB Name have to be the same as the Slave DB name?
Oct
17
answered mysql master-slave setup with synchronous replication
Oct
17
comment What prevents loops in mysql master-master setups?
Rather, the locking which assures atomicity when using (e.g.) REPEATABLE_READ txn isolation, does not extend to the other node of a master-master - it does not do transactional replication - therefore if both nodes are written to, then situations which would lock or deadlock on a single node, will fail spectacularly and cause either out-of-sync data or a replication error (which mysql does not attempt to recover from automatically)
Oct
17
comment What prevents loops in mysql master-master setups?
In order to tolerate master-master, the application needs to work on the basis that its transactions will have the same (or equivalent) results regardless of the order they are applied AND not fail regardless of the order they are applied, in practice this is very hard to achieve - there are some special cases where it's possible.
Oct
16
answered Software for a scalable, reliable, multi-TB storage array?
Oct
16
comment What prevents loops in mysql master-master setups?
"Poor database design" may mean that you haven't thought about master-master in every single query you throw at it. It's easy - really easy - to make an app which breaks master-master. Any application not SPECIFICALLY| written to tolerate it will succeed quite soon (provided there is a reasonable level of traffic). MMM does NOT do synchronous replication, so transactions don't necessarily happen in the same order on the two servers - which means that they may fail or leave data out of sync in the general case.