Category: Software

If it’s not hard, it’s software

Categories
Mozilla Software

Zimbra Desktop

Yahoo owned Zimbra released the latest Zimbra Desktop today. At a glance it seems pretty nice. Essentially Yahoo Mail running on Mozilla Prism. It does seem somewhat of a large download for what it is. But maybe they still have some fat to trim. What is now Firefox was pretty hefty when it first split from Mozilla App Suite. It takes time. The installer is also very slow. I see it has jetty, so looks like there’s a Java backend.

It supports any POP3 or IMAP account similar to Thunderbird, with options for Gmail and Yahoo Plus in the wizard (for those who don’t know what type of email account those are).

My general impression is pretty neat, but the UI needs work. It often has scroll bars to view the contents of a window (just like a webpage). This is normal in a browser, but just feels strange in what is designed to be like a client side application. Even setup has this problem.

So far I still think Thunderbird and Apple Mail provide a better desktop experience. But Zimbra’s the new kid on the block, so I wouldn’t underestimate it. It is Open Source. It will be interesting to see who contributes to it.

If anyone else tried it, I’m curious to know what you thought of it.

Categories
Internet Software Web Development

Amazon S3 Outage

The buzz around the web today was the outage of Amazon’s S3. It shows what websites are “doing it right”, and who fails. This is a great follow up to my “Reliability On The Grid” post the other day.

Amazon S3 is cloud based computing. Essentially when you send them a file using their REST or SOAP interface Amazon stores it on multiple nodes in their infrastructure. This provides redundancy and security (in case a data center catches fire for example). Because of this design it’s often though that cloud based computing is invincible to problems. This is hardly the fact. Just like any large system, it’s complicated and full of hazards. It takes only a small software glitch, or an unaccounted for issue to cause the entire thing to grind to a halt. More complexity = more things that can fail.

Amazon S3 is popular because it’s cheap and easy to scale. It’s pay-per-use based on bandwidth, disk storage, and requests. Because that allows for websites to grow without having to make a large infrastructure investment, it’s popular for “Web 2.0” companies trying to keep their budgets tight. Notably sites like Twitter, WordPress.com, SmugMug and Amazon.com themselves all use Amazon S3 to host things like images.

Many sites, notably Twitter, and SmugMug didn’t have a good day today. WordPress.com and Amazon.com operated like normal. The obvious reason for this is WordPress.com and Amazon.com are much better in terms of infrastructure and design.

WordPress.com uses S3, but proxies that with Varnish. There’s a brief description here, and a more detailed breakdown here. According to Barry Abrahamson, WordPress.com does 1500 image requests per second across and 80-100 are served through S3. They have (slower) back up’s in house for when S3 is down and can failover if S3 has a problem. This means they can leverage S3 to their advantage, but aren’t down because of S3. Using Varnish allows them to keep the S3 bill down by using their own bandwidth (likely cheaper since they are a large site and can get better rates on bandwidth). This also and lets them have this have a good level of redundancy. Awesome job.

Amazon.com uses S3 themselves. If you look at images on the site, they are actually served from g-ecx.images-amazon.com. Which is actually:

g-ecx.images-amazon.com. 38     IN      CNAME   ant.mii.instacontent.net.

instacontent.net is actually part of Mirror Image, a CDN. This is essentially outsourcing what WordPress.com is doing in terms of caching. It’s similar to Akamai’s services. A CDN’s biggest advantage is lowering latency by using servers closer to the customer, which are generally going to feel faster. The other benefit is that they cache content for when the origin is having problems. Because Amazon has a layer on top of S3, they have an added level of protection and remained up and images loaded.

Twitter serves most images such as avatars right off of S3. This means when S3 went down, there were thousands of dead images on their pages. No caching, not even a CNAME in place. Image hosting is the least of their concerns. Keeping the service up and running is their #1 concern right now. The service was still usable, just ugly. Many users take advantage of third party clients anyway.

Using a CDN or having the infrastructure in house is obviously more expensive (it makes S3 more of a luxury than a cost savings measure), but it means your not depending on one third party for your uptime.

Categories
Funny Software

Jared Lives

Jared - Butcherer Of SongsI didn’t even realize that this is still around. Back in the mid 90’s Jared was iconic for Mac users, distributed through the crazy folks at Freeverse. Apparently they kept it going for a decade. There’s a Mac OS X version, a Dashboard widget, and even a new iPhone Application.

That brought back some memories. The iPhone’s CPU even underclocked to 412Mhz is way faster than the PPC 603e @ 75MHz I used when I first damaged my ear drums listening to Jared. And that was a full desktop.

To see something this silly last so long is funny itself. I hope Jared has a job that’s not in the music industry. I wonder if he served as insporation for William Hung?

Bonus: You can find the lyrics, english translation, and a brief history of the song Luna de Xelajú on wikipedia!

Categories
Internet Software Web Development

Reliability On The Grid

There’s been a lot of discussion lately (in particular NYTimes, Data Center Knowledge) regarding both reliability of web applications which users are becoming more and more reliant on, as well as the security of such applications. It’s a pretty interesting topic considering there are so many things that ultimately have an impact on these two metrics. I call them metrics since that’s what they really are.

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Categories
Software

AVG Wastes Bandwidth

AVG really needs to fix their “LinkScanner” product. It essentially scans pages for links and pre-downloads them to check for malware. If that doesn’t sound so bad, then your obviously not paying for bandwidth or trying to keep your server load manageable. Essentially it means more traffic pegging servers and downloading pages, but most of it being a total waste.

This isn’t just bad for webmasters. This excess traffic hogs ISP’s (who now plan to charge by-the-byte) and WiFi. In a country where we are tight on bandwidth, this is really a pretty lousy implementation.

AVG even went so far as to use multiple user agents, all of which seem to spoof IE, making it more difficult to block.

The best way to block the bogus AVG traffic seem to be by looking for the Accept-Encoding HTTP header, which could be done using an Apache rewrite rule if you can’t do so on the firewall or load balancer level.

AVG really needs to reaccess this poorly designed product. It’s unnecessarily taxing the web.

Categories
Apple Software

ANSI Color In Mac OS X 10.4

By default when connecting over SSH to my Mac OS X 10.4 box (using bash shell), there’s no ANSI color. Sometimes it’s pretty handy to have. I keep forgetting how to turn it on.

To add, put the following in the .profile file in your home directory:

TERM=xterm-color; export TERM

Now when I SSH in, I get ANSI color goodness.

Hopefully next time I’ll just look for this post.

Categories
Apple Software

Don’t Let It XPire

Seems everyone who tries Windows Vista comes to at least one of two conclusions (if not both):

  1. Please don’t let Windows XP Expire – There’s even a petition for those in this camp. And it’s getting press.
  2. Mac Time – Enough said. Mac OS X 10.5 isn’t perfect, but is anything? It’s about as close as anyone has gotten.

It will be interesting to see the fate of XP.

Categories
Software Tech (General)

HD Photo Now JPEG XR

Back in March I mentioned that Microsoft is trying to standardize it’s HD Photo format as the official successor to the ever so popular JPEG format. Well it’s now looking to become JPEG XR.

Suprisingly it’s still not listed on Microsoft’s Open Specification Promise where Microsoft lists things it won’t sue over. Hopefully they will update that soon. My understanding from what I’ve read is that’s the intent.

It’s a pretty interesting thing going on. Video on the web has improved by leaps and bounds over the years from a tiny grainy video object that took a decade to load, to instantly loading and still improving quality Flash / Windows Media / QuickTime. Photos on the other hand have been using JPEG for pretty much a decade. Most photography buffs don’t seem to fond of JPEG because it can degrade picture quality, but still love services like Flickr.

Will JPEG XR spark a photo revolution by allowing better quality?

Categories
Mozilla Open Source Software

Top Windows Programs Open Source

CNet has a slide show with it’s top Windows programs. It’s a pretty good list. I’d agree with it for pretty much everything. What I found really interesting is that of the 9 listed, 7 are open source. Here’s the rundown with the license for the source of each:

Interesting to see the penetration of open source here.

Categories
Apple Software

Mac OS X 10.5 Leopard

I got my copy of Mac OS X 10.5 earlier this week. Bought it from J&R (via Amazon) since it was $99 + shipping, less than Amazon itself was selling it for. For some reason both of them are able to undercut Apple (even with a corporate discount) which seemed odd. Here’s my rundown of the new OS during the first 24 hours.

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