Now you have your cluster on ec2. Run it with a different provisioner, and presto, your cluster is on VMs too!
## It's All Chef
The best part: since it's Chef, it gets all the benefits and flexibility of Chef.
### It's Convergent
Because it's in Chef, Metal is convergent. If something fails, re-run it. If you just realized you need to run a new recipe everywhere or run a new machine, just change the Metal recipe and re-run. Only new machines are created, …
…from 10 case study .servers to just two servers on EC2 with , and reduced response times to less than a millisecond. Read the
Do Continuouson Live Data? ScaleOut 's hServer was built to let you hold your daily business data in-memory, update it as it changes, and concurrently run continuous MapReduce tasks on it to analyze it in real-time. We call this "stateful" analysis. …
…choose specific tools, you may need to migrate to another environment such as Amazon EC2.
Q: A sales person told me that Percona XtraDB Cluster was not fully baked yet about half a year ago, is it ready to go for production now? (we have cluster instances in Amazon for low latency)
PXC is fully baked, has a beautiful golden crust, and smells delicious.
But seriously, we've helped many customers deploy PXC over the past year, and it's working in many production environments. …
…data centers, one is a managed environment with DELL hardware, and the second is Amazon EC2.
Fork Rate . A strange configuration issue caused processes to be created at a rate of several hundred a second rather than the expected 1-10/second.
Flow control packets . A network configuration that honors flow control packets and isn't configured to disable them, can temporarily cause dropped traffic.
Swap In/Out Rate . Measure the right thing. It's the rate memory is swapped …
…I decided to see if i could use the second method to get Elastix up and running on EC2 - limited credit to me here, for the most part I am following through the steps from the second blog linked to above, with slight tweaks. Also note I am running commands as root - so prefix with sudo where relevant for your usage.
…[here](https://github.com/jkeiser/chef-metal/blob/master/README.md). The short form is, imagine writing this in a recipe and having the machine show up, converged, in EC2, VirtualBox, or LXC: machine 'luigi' do recipe 'apache' recipe 'mywebapp' end
It can reliably create instances on EC2 (via Fog) and VMs in vagrant at the moment. This is extremely alpha, but wanted to get it into your hands for any holiday hacking fun :)
The total client to server roundtrip time is ~380ms. As a result, we would expect a regular HTTP connection to yield a TTFB of ~1140ms: 380ms for DNS, 380ms for TCP handshake, and 380ms for the HTTP request and (instant) response. For HTTPS, we would add another two RTTs to negotiate all the required parameters: 1140ms + 760ms, or ~1900ms (5 RTTs) in total. Well, that's …
Iconic framework is "a beautiful front-end framework for developing hybrid mobile apps in ." Based on SASS and . Looks interesting.
Lines of Code
How Authy Built A Fault-Tolerant Two-Factor Authentication Service . , , EC2, stuff like that.
But more interesting is what Give it a try , it's the most awesome 2FA iPhone app.is doing to make two-factor authentication usable.
…built-in SSL support. Thus, for this test, I spun up two different Amazon EC2 instances (machines A and B, described above). Machine C, loacated in Northern California, was used as the client, and this test was conducted both with Community MySQL as well as Percona Server, and with key sizes ranging from zero to 4096 bits. The SSL cipher suite used was the default, and the test script the same as before - run 10 trials, create 100 connections as fast as we can, and report results …
…for all the feeds across our sites. We started off by running our own Redis server on EC2, but after a few months of constantly worrying about what we'd do for failover and how best to persist our Redis data, we decided to switch to using OpenRedis. Since then, we focused on building great social apps instead of getting into the business of hosting databases. It gives us one less thing to worry about as we're trying to iterate on our product. (There is a caveat to this — it's …