Amazon je počao širiti svoju mrežu partnera, implementatora i sistemskih integratora, a shodno tome su stvorili i portal za ramzjenu informacija, studija slučajeva te IT/Cloud analiza. Tako na jednom mjestu možete pronaći pružatelja usluge koji odgovara profilu potrebnom za Vaš Cloud projekt, a generalna podjela također tangira i kompanije koje se bave izgradnjom vlastitih usluga “on-top” AWS (npr. Dropbox koji koristi S3)

Amazon je objavio kako smanjuje cijene svoje S3 cloud storage usluge za odokativnih deset posto. Promjena je došla u periodu kada Amazon obilježava iznimno velik rast potražnje za svojim uslugama, a i ostali impulsi iz cijelokupne branše su također obečavajući. Očito im je mnogobrojna klijentela dala zamaha za danju inovativnost te optimiziranje “rekova”. Ukoliko Vas zanima primjer iz stvarnog života…pri pohrani 50 TB podataka smanjenje troškova će iznositi 12 % , a brojka raste  do 13,5% pri pohrani 500 TB podataka i više no o svemu detaljno možete pročitati na njihovom službenom blogu

Amazon je  javno pokrenuo NoSQL uslugu u svojem Cloud ekosustavu po imenu DynamoDB. Usluga se zapravo kuhala dugi niz godina te je nastala unutar inženjerskih odjela AWS-a koji su htjeli rasteretiti poslovne procese najpopularnije online knjižare. Kako to objašanjava Werner Vogels , DynamoDB je brza, skalabilna NoSQL usluga koja služi kao pohranitelj podataka kod velikih i brzih internet aplikacija. Samim time postaje dodatni alat pri razvoju web stranica, a velika razlika između nje i ostalih “standardnih” baza podataka je što NoSQL nije relacijska baza podataka. Ugrubo, NoSQL su baze podataka koje izlgedaju kao velike tablice podataka…i to je to.

Kako to sve izgleda možete ukratko vidjeti na službenom blogu Jeffa Barra, a amazon je pripremio i kratki video kako bi cijeli sustav približio javnosti…

Today we will front two similar guys in cloud storage space: Rackspace CloudFiles & Amazon Simple Storage Service (S3)

These prominent players have been with us for quite some time now and have been serving our static HTTP requests with more than just a smile. Amazon did start earlier but we cannot bypass Rackspace which is famous for its fanatical support and general hosting experience.

CONCEPT & PHILOSOPHY

Both services are basically cloud storage services and act as giant hard disk where you can upload your files for instant or later use. These services are ideal for serving static content (video, photo, audio, documents) and you don’t have to worry about server storage limits, backup and redundancy, also they reside somewhere between PaaS and IaaS layer of cloud technology…so let the show-off begin…

INFRASTRUCTURE

AWS has built impressive array of datacanters around the globe and right now has presence in 19 cities accross three different continents…

On the other hand, Rackspace has teamed up with Akamai which is traditionaly considered a leader in web infrastructure. These guys have around 86.000 servers and have done projects like live streaming to 700.000 YouTube users or delivering 20% of overall web traffic. See the video for detailed visualization.

Some tests on CDN speeds have favoured Cloudfront over Akamai but we have also pulled some internal tests on large data files (video / audio) and have come to conclusion that it is the other way around i.e. Akami wins. You can test the CDN online by yourself to check the scores but we will vote for Rackspace/Akami in this round.

FEATURES

Amazon was the pioneer in cloud storage space and unfortunately for RackSpace, AWS position stays rock solid in features area. AWS has Multi user fragmentation options, large data import/export plans, reduced redundancy options, region storage selection, versioning…just to name a few. Rackspace is once again better in customer support and OpenStack policy which is generally a good thing, but features points go to AWS this time.

One thing that excells in AWS is the option to do native CDN streaming via RTMP and this is the killer functionality that puts the large victory for AWS in this round.

INTEGRATION WITH OTHER SERVICES / 3rd party apps

Being first in the field means that developers had time to develop on top of your platform. This rule has proven right as S3 has been the platform storage layer for top-notch apps like Dropbox, Twitter and JungleDisk (which also supoorts CloudFiles now) just to name a few making the S3 ecosystem large, important and scalable.

As for the tools for managing S3 or Cloudfiles … AWS S3 is a clear winner with over 35 apps that let you manage S3 accountswith partial or all functionality.

SERVICE LEVEL AGREEMENT – SLA

a. AWS - AWS will use commercially reasonable efforts to make Amazon S3 available with a Monthly Uptime Percentage (defined below) of at least 99.9% during any monthly billing cycle (the “Service Commitment”). In the event Amazon S3 does not meet the Service Commitment, you will be eligible to receive a Service Credit as described below.

Service Credits are calculated as a percentage of the total charges paid by you for Amazon S3 for the billing cycle in which the error occurred in accordance with the schedule below.

Designed to provide 99.99% durability and 99.99% availability of objects over a given year. This durability level corresponds to an average annual expected loss of 0.01% of objects.Designed to sustain the loss of data in a single facility.

b. CloudFiles - CloudFiles SLA is very similar to S3 but has the major advantage in returning credits if they fail to meet the required uptime. Credit amount can go to 100% as you see in the SLA picture bellow

With the credits in mind we give this round to RackSpace making the score once again even!

CDN INTEGRATION

CDN integration is becoming more and more important as your website/service grows and you need to serve static content that is close to your user. This round generally resides in first section but we decided to give it a separate round as from our perspective your users are the ones that will use your service and CDN is a big part of the experience. RackSpace CloudFiles have native integration with Akamai (before it was LimeLight) and you don’t need to do any extra work for enabling it. AWS has more complicated CDN solution as you need to sign-up for CloudFront, setup distributions and make extra payments. One more important thing for AWS…it supports CDN RTMP streaming of your media files. Super cool but we will give this round points for CloudFiles as they really got this part of it right without extra hassle. AWS CDN is more powerful in functionality but we gave them points for functionality allready so…

API SUPPORT / LIBRARIES / DEVELOPMENT + .NET C sharp examples

CloudFiles has an ReSTful API with a clear and concise developers guide. It also support client libraries built in Java, PHP, .NET, Python & Ruby making development on top of their platform layer extra easy.

using com.mosso.cloudfiles;
using com.mosso.cloudfiles.domain;

public class processImage : IHttpHandler
{
public void ProcessRequest (HttpContext context)
{
UserCredentials uc = new UserCredentials("mossoUID", "mossoKEY");
Connection cn = new Connection(uc);

cn.PutStorageItem("mossoImageContainer", "c:\\CoolFileImage.jpg");
}
}

While CloudFiles support for their API and libraries is enough for any type of development it cannot match AWS API for S3 and their libraries, articles, forums, FAQ, discussion boards and more. AWS supports their own official libraries as well as customer libraries for development which are in a fair stable releases.

using Amazon.S3;
using Amazon.S3.Model;
using Amazon.S3.Transfer;
using Amazon.S3.Util;

public class imageHandler : IHttpHandler
{
public void ProcessRequest (HttpContext context)
{
  AmazonS3Config s3config = new AmazonS3Config();
  s3config.UseSecureStringForAwsSecretKey = false;

  AmazonS3Client s3client = new AmazonS3Client("AKID", "SECRET_KEY", s3config);

  PutObjectRequest poReq = new PutObjectRequest();
  poReq.BucketName = "Bucket_Name";
  poReq.FilePath = "c:\\CoolFileImage.jpg";
  poReq.Key = "DESIRED_FILE_NAME";
  poReq.CannedACL = S3CannedACL.PublicRead;
  PutObjectResponse poResp = s3client.PutObject(poReq);
  }
}

Also, having the AWS management console is a superb way for managing your development resources in an easy/GUI way.

SUPPORT / CUSTOMER SERVICE

Support is something you need to pay for at AWS. Making this test a little unfair as Rackspace has native fanatical support included in the CloudFiles pricing. As for the quality of the service….Rackspace is known for their support and we as a company can back it up as we use it on a daily basis. Live chat, emails, forums, ticketing, phone calls 24/7…all is included.

AWS has multi-tier support from Bronze to Platinum packages but for instance their fastest guaranteed response is 15 minutes as Rackspace pushes it to one minute in every situation via Live Chat. Also note that Rackspace has greater experience in general hosting as a company and can provide with insights for various not-cloud fields.

PRICING

Pricing is the most important part of this duel and we all know that, but is it simple? Not quite as the services are not 100% similar. One thing that complicates the duel is support which Rackspace includes in the pricing and also the CDN integration which with RackSpace is also native. Advantages of AWS is a free tier of 5 GB of data and 15 GB of bandwith which Rackspace does not support. Here are all the details

AWS

CloudFiles

We will give this round to S3 as they are generally cheaper with a free tier for new users making a close tie between contenders…

Our reccomendation: If you need fast, lightweight and easy access to CDN or Cloud storage then go for CloudFiles as they are easier to setup. Costs are generally lower in the long run. If you are a developer and building a scalable app then go for the S3 solution as it is much powerful and feature based.