Hello All, I currently hold a tracking service that records visits from various sources. At times we record the visits and redirect to our clients or we let clients call us to report visits. The architecture is two worker boxes configured behind a load-balancer. This system is setup using Amazon EC2 and the load-balancer used is Amazon's...
I have a working WAL shipping setup with a warm standby slave server applying the WAL files. When I create the pg_standby trigger file, it detects this at once, but it takes about 10-15 minutes to actually be ready for accepting connections. Most of the time is spent waiting for .history files. The trigger file is empty, so a "smart" f...
Hi everybody, We have thought a bit about running a noSQL database for our next project. However, we're not sure about which platform that will give us the best possible availability and has the best built-in replication features/functions to provide this - with the least headache. Right now, Cassandra appears as the best candidate, bu...
Hi everybody, Let's say that we are about to build an web application where high availability is top focus. Our customers are companies, so downtime are equal to loss of revenue for everyone involved. To sum it up, we need to be online at all times to keep everyone happy. So, from a very basic perspective, what techniques should we be...
I have a web site which will be featured in a place which will send a large peak of one-time traffic in a couple of weeks. The server hosting the website also hosts the control panel my customers use. The website part is simple and mostly static. But it includes a wordpress blog. My question How and where can I put or cache the websi...
Hello, I'm curies how trackerless torrent tracking works. Tried to search for information (presentation of something) about the DHT torrent protocol but couldn't find valuable resources. Could someone please provide description or a link? Thank you, Maxim. ...
More and more of the noSQL databases that are in the spotlight uses the master/slave pattern to provide "availability", but what it does (at least from my perspective) is creating the weak link in a chain that will break anytime. - Master goes down, slaves stops to function. It's a great way to handle big amounts of data and to even out...
We're developing a server system in Scala + Akka for a game that will serve clients in Android, iPhone, and Second Life. There are parts of this server that need to be highly available, running on multiple machines. If one of those servers dies (of, say, hardware failure), the system needs to keep running. I think I want the clients t...
Hello, I am writing a small proxy application which should be redundant, e.g. primary proxy will be running on one server and the redundant one will run on a separate server. Is there a simple high-availability framework which I can use to implement this redundancy? For example, this HA framework would send pings between instances and r...
How do I implement a transparent high availability database fail-over solution for my website? ...