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  • What's the best practice to do SOA exception handling?

    - by sun1991
    Here's some interesting debate going on between me and my colleague when coming to handle SOA exceptions: On one side, I support what Juval Lowy said in Programming WCF Services 3rd Edition: As stated at the beginning of this chapter, it is a common illusion that clients care about errors or have anything meaningful to do when they occur. Any attempt to bake such capabilities into the client creates an inordinate degree of coupling between the client and the object, raising serious design questions. How could the client possibly know more about the error than the service, unless it is tightly coupled to it? What if the error originated several layers below the service—should the client be coupled to those lowlevel layers? Should the client try the call again? How often and how frequently? Should the client inform the user of the error? Is there a user? By having all service exceptions be indistinguishable from one another, WCF decouples the client from the service. The less the client knows about what happened on the service side, the more decoupled the interaction will be. On the other side, here's what my colleague suggest: I believe it’s simply incorrect, as it does not align with best practices in building a service oriented architecture and it ignores the general idea that there are problems that users are able to recover from, such as not keying a value correctly. If we considered only systems exceptions, perhaps this idea holds, but systems exceptions are only part of the exception domain. User recoverable exceptions are the other part of the domain and are likely to happen on a regular basis. I believe the correct way to build a service oriented architecture is to map user recoverable situations to checked exceptions, then to marshall each checked exception back to the client as a unique exception that client application programmers are able to handle appropriately. Marshall all runtime exceptions back to the client as a system exception, along with the stack trace so that it is easy to troubleshoot the root cause. I'd like to know what you think about this? Thank you.

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  • Using another domain with Google App Engine

    - by gsingh2011
    I'm trying to change my google app engine domain (domain.appspot.com) to the domain I bought from 1&1.com (mydomain.com). I went into the google app engine settings and added the domain. After making a Google Apps account, I was asked to verify my domain. The directions say that 1&1 doesn't allow me to create TXT records, so I can't use that method for verification. Their alternative is to upload an HTML file to my server, but I didn't buy hosting with my domain, I just bought the domain. My files are on domain.appspot.com. How can I make mydomain.com point to domain.appspot.com? I've added the ns1.googleghs.com as my nameservers in my 1&1 DNS settings, but I still can't verify my domain with Google Apps.

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  • Impressions and traffic dropped by 70 %

    - by Louise
    Can anyone advise why my impressions dropped and traffic as well? I used to have very generic keywords such as: anti aging, anti wrinkle, face cream, eye cream. I thought they were bad and made the keywords more specific: anti wrinkle eye cream, anti aging face cream, etc. Following that change, my impressions and traffic dropped dramatically! I used to get 45+ visitors a day, now I get 15- visitors a day. What is the way forward? I thought what I did to the keywords was good?

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  • Directing from a 1und1 hosting solution, with urls intact

    - by Jelmar
    I have done this before on GoDaddy without a hitch, but I cannot seem to figure out this particular case. I have a domain space with temporary url http://yogainun.mysubname.com/ and am hosting the domain name that is to be applied to it at 1und1.de. Right now I have set it up so that from the 1und1 domain name hosting the address http://www.yoga-in-unternehmen.de/ is frame redirected to the subdomain that I just referred to. But this is not what I want. http://www.yoga-in-unternehmen.de/ is to be the domain. With the frame redirect, url's like http://www.yoga-in-unternehmen.de/example-article do not show up. But this is what I want. With godaddy in a similar case, I just turned on DNS and changed the name servers. That worked without problem, but with 1und1 not. Is there something I am missing?

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  • What framework & technology would you use to make a site like fancy.com [on hold]

    - by adriancdperu
    Im about to start a 3 month process to build something similar to fancy.com. What are your opinions about: best language + framework? (server - side) = I was thinking about LAMP and CakePHP important technological issues to consider when developing? MAU assumption = 1 million. Main features: Registration with Facebook Normal registration Search articles Like articles Post articles Comment on articles Suggest articles to friends via mail, Facebook, Twitter and about 3 or 4 more apis Ranking of articles as a cron job done every minute, many criterias, many rankings Follow users Datamining users to mail everyday with articles they have high probability of liking Operation tools for admins to add articles and close user accounts Mobile focus

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  • Is it better to define all routes in the Global.asax than to define separately in the areas?

    - by Matthew Patrick Cashatt
    I am working on a MVC 4 project that will serve as an API layer of a larger application. The developers that came before me set up separate Areas to separate different API requests (i.e Search, Customers, Products, and so forth). I am noticing that each Area has separate Area registration classes that define routes for that area. However, the routes defined are not area-specific (i.e. {controller}/{action}/{id} might be defined redundantly in a couple of areas). My instinct would be to move all of these route definitions to a common place like the Global.asax to avoid redundancy and collisions, but I am not sure if I am correct about that.

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  • Web based interface for open SSL client certificates

    - by Felix
    Hi there! We are currently developing a apache2-based web application and want to invite some beta testers to give it a try. To be on the safe side, access should be provided by individual browser certificates (.p12) which are issued using a (fake) CA. Our users should be passing a complete register/login process and some of them will be granted administrative privileges within the application. That's why a preceding simple web-based authentication won't be sufficient. Atm, I am using a serverside shellscript to generate the certificates each time. Do you know about a small, web-based tool to simplify the process of generating / revoking those certificates? Maybe an overview of the CA's index.txt plus the option to revoke a cert and a link to download them directly?

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  • How to display "Comic Sans MS" in Linux?

    - by Roman
    I use "Comic Sans MS" font on my web page. The web page looks OK if I open it under Windows and MAC. But it does not work under Linux. How can I solve this problem? May be I can put the font on my web server? Is this font available for free? Can it slow down my page? Or may be I can replace "Comic Sans MS" by another font which is similar and is available on the 3 operation systems?

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  • Find "secret" port number

    - by CJ Sculti
    this may be kind of an odd question. My friend has challenged me. So somehow, he change the "port" of his site to 31337. If you just go to domain.com, you get redirected to google, to access the real site you go to domain.com:31337. He is going to change it again and he is challenging me to find out which port it is. Is this possible without guessing? Hopefully someone can help! Thanks. Oh, and is this the right stack exchange site to post this on...

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  • Will Google crawl session based website

    - by DonShwep
    I have a website, it is split into 3 categories but using PHP its an all-in one kind of style. When a user chooses a category on the home page a session is set, this is then used to set the style and contents of the website. Would Googlebot and other bots be able to still scan my website? If a page is accessed and no session is set then the user is sent back to the home page. I have created special links, that set a session but go straight to the contact page. Even this page doesn't seem to be showing up. Any ideas if a sitemap with specially crafted links (to set the session) will help Google?

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  • How to determine the source of a request in a distributed service system?

    - by Kabumbus
    Map/Reduce is a great concept for sorting large quantities of data at once. What to do if you have small parts of data and you need to reduce it all the time? Simple example - choosing a service for request. Imagine we have 10 services. Each provides services host with sets of request headers and post/get arguments. Each service declares it has 30 unique keys - 10 per set. service A: name id ... Now imagine we have a distributed services host. We have 200 machines with 10 services on each. Each service has 30 unique keys in there sets. but now to find to which service to map the incoming request we make our services post unique values that map to that sets. We can have up to or more than 10 000 such values sets on each machine per each service. service A machine 1 name = Sam id = 13245 ... service A machine 1 name = Ben id = 33232 ... ... service A machine 100 name = Ron id = 777888 ... So we get 200 * 10 * 30 * 30 * 10 000 == 18 000 000 000 and we get 500 requests per second on our gateway each containing 45 items 15 of which are just noise. And our task is to find a service for request (at least a machine it is running on). On all machines all over cluster for same services we have same rules. We can first select to which service came our request via rules filter 10 * 30. and we will have 200 * 30 * 10 000 == 60 000 000. So... 60 mil is definitely a problem... I hope to get on idea of mapping 30 * 10 000 onto some artificial neural network alike Perceptron that outputs 1 if 30 words (some hashes from words) from the request are correct or if less than Perceptron should return 0. And I’ll send each such Perceptron for each service from each machine to gateway. So I would have a map Perceptron <-> machine for each service. Can any one tall me if my Perceptron idea is at least “sane”? Or normal people do it some other way? Or if there are better ANNs for such purposes?

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  • What should I do to scale out an high-traffic website?

    - by makerofthings7
    What Best Practices should be undertaken for a Website that needs to "scale out" to handle capacity? This is especially relevant now that people are considering the cloud, but may be missing out on the fundamentals. I'm interested in hearing about anything you consider a best practice from development-level tasks, to infrastructure, to management. Use your best judgement when posting multiple answers, since it may make sense to post them separately for voting purposes. (hint: you'll likely get more reputation points for many small answers than one large answer)

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  • New website - best practice for requirements specs? [closed]

    - by Alex K.
    Possible Duplicate: Extracting user requirements from a person who does not know how to express himself As a hobby freelancer I'm new to this. I've never had a non-technical client before explain to me what his future website is supposed to do. A person wants me to make a website for him and he basically explained to me what's it about. However, he's not a technical person and he just doesn't understand what I need to know and how to properly describe/explain it to me. When I ask him how a user is supposed to submit an entry to the website he told me "He fills out a form.", which is not really helping me. This was just an example, it goes on for other sections of the website as well which are a lot harder to explain. The website will be aimed at a specific professional user demographic and I have no clue about their profession and how their industry works. I tried to find some good Product Requirements Document templates on Google but none of them really seemed like they could help him understand how to write it so I can understand what he wants/needs. Can somebody please give me a hint on how to deal with such non-technical clients?

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  • What's the best platform for blogging about coding? [closed]

    - by timday
    I'm toying with starting an occasional blog for posting odd bits of coding related stuff (mainly C++, probably). Are there any platforms which can be recommended as providing exceptionally good support (e.g syntax highlighting) for posting snippets of code ? (Or any to avoid because posting mono-spaced font blocks of text is a pain). Outcome: I accepted Josh K's answer because what I actually ended up doing was realizing I was more interested in articles than a blog style, getting back into LaTeX (after almost 20 years away from it), using the "listings" package for code, and pushing the HTML/PDF results to my ISP's static-hosting pages. (HTML generated using tex4ht). Kudos to the answers mentioning Wordpress, Tumblr and Jekyll; I spent some time looking into all of them.

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  • Almost Realtime Data and Web application

    - by Chris G.
    I have a computer that is recording 100 different data points into an OPC server. I've written a simple OPC client that can read all of this data. I have a front-end website on a different network that I would like to consume this data. I could easily set the OPC client to send the data to a SQL server and the website could read from it, but that would be a lot of writes. If I wanted the data to be updated every 10 seconds I'd be writing to the database every 10 seconds. (I could probably just serialize the 100 points to get 1 write / 10 seconds but that would also limit my ability to search the data later). This solution wouldn't scale very well. If I had 100 of these computers the situation would quickly grow out of hand. Obviously I am well out of my league here and I have no experience with working with a large amount of data like this. What are my options and what should I research?

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  • How to display "Comic Sans MS" in Linux?

    - by Roman
    I use "Comic Sans MS" font on my web page. The web page looks OK if I open it under Windows and MAC. But it does not work under Linux. How can I solve this problem? May be I can put the font on my web server? Is this font available for free? Can it slow down my page? Or may be I can replace "Comic Sans MS" by another font which is similar and is available on the 3 operation systems?

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  • Fake links cause crawl error in Google Webmaster Tools

    - by Itai
    Google reported Crawl Errors last week on my largest site though Webmaster Tools. Here is the message: Google detected a significant increase in the number of URLs that return a 404 (Page Not Found) error. Investigating these errors and fixing them where appropriate ensures that Google can successfully crawl your site's pages. The Crawl Errors list is now full of hundreds of fake links like these causing 16,519 errors so far: Note that my site does not even have a search.html and is not related to any of the terms shown in the above image. Inspecting sources for one of those links, I can see this is not simply an isolated source but a concerted effort: Each of the links has a few to a dozen sources all from different, seemingly unrelated sites. It is completely baffling as to why would someone to spending effort doing this. What are they hoping to achieve? Is this an attack? Most importantly: Does this have a negative effect on my side? Could it negatively impact my ranking? If so, what to do about it? The few linking pages I looked at are full of thousands of links to tons of sites and have no contact information and do not seem like the kind of people who would simply stop if asked nicely! According to Google Webmaster Tools, these errors have appeared in a span of 11 days. No crawl errors were being reported previously.

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  • Alternatives for saving data with jquery

    - by Phil Vallone
    I am not sure if this question is considered too broad, but I would like to reach out to my fellow programmers to see what alternatives are out there for saving data using jquery. I have a content management system that generates an set of HTML pages called an IETM (Interactive Electronic Technical Manual). The HTML pages are written in HTML and uses jquery. The ITEM is meant to be light weight, portable and run on most modern browsers. I am looking for a way to save data. I have considered cookies and sqlite. Are there any other alternatives for saving data using jquery?

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  • Is there a weight for html link?

    - by Questions
    I would like to know if there is any weight associated with a html link (its backlink) when google does crawling/indexing. Will 1,2 & 3 be ever considered as a backlink by Google? 1. <a href="xyz.com">1</a> // one character link 2. <a href="xyz.com"> </a> //blank space link 3. <a href="xyz.com">!</a> //special character link 4. <a href="xyz.com">keyword</a> //meaningful word link I hope my question is understandable and guess this is right forum. I don't know to put it in other words. Thanks in advance.

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  • Code to simulate a users actions, such as logging in

    - by Gortron
    I've recently begun working on a PHP application, replacing another developer. I believed the application was using an API to communicate with a remote service but when I looked through the code I found that it was using a set of functions to actually log in, fill out forms and submit them as a user might do in a browser. My intention is to replace this code, to use the services API instead. I've considered leaving the code as is and not replace it. It makes me wonder though is this a common practice in the software industry? To have a programme simulate a users actions in a browser to perform a set of actions? It feels to me that this is clever but poor programming, Have any other developers seen this?

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  • When will microsoft release IE9? [closed]

    - by Rob McKinnon
    I was one of those people early on to try their IE9 beta, and it was terribly buggy. It still does function horribly. IMO any windows release after 5(2k,nt,xp) absolutely sux the life out of my resources compared to RPM linux(opensuse), until at least service pack 2. MS is trying to push HTML5/CSS3 and they cannot pass the Acid 3 test. I am wondering when IE9 will become functional. I am a big supported of MS applications. I have a great amount of adoration for IIS7 because they have support for CGI/PHP. Is IE9 going to be released before 2012?

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  • Hosting several HTTP servers on single domain name

    - by Nakilon
    Several people have got a single domain name server.company.com server, where they are now supposed to host their infrastructure or temporal projects, written in different ways even in different programming languages. How do they divide the domain? Split into subdomains: john.server.company.com, kate.server.company.com, etc. This would need a lot of admins' assistance, time, etc. -- there would be no way for John and Kate to do it themselves. Split into url namespaces: server.company.com/john/, server.company.com/kate/, etc. Pro: They now can make a single welcome page at root with any additional info (if they need?) Con: Each server would need to know their namespace string constant, and hrefs like / whould need patching. Split into ports: server.company.com:8080, server.company.com:8081, etc. and make a single :80 welcome page. Pro: They still can make a single welcome page at :80 Con: ??? I would like to know more pros and cons for 2 and 3 solution.

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  • Does Submit to Index on a page with new content update Content Keywords for the site?

    - by Dan Kanze
    Using Google Webmaster Tools I'm trying to update the Content Keywords of my site. I'm confused about the relationship between Submit to Index and Content Keywords Does Fetch as Google -- Submit to Index on a previously existing indexed page containing new content expidite updating the Content Keywords crawled by the real Google bot? Does Submit to Index only submit new URL's so that previously indexed URL's still point to the older cached version until Google crawls specifically for new content on its own? Does Submit to Index have anything to do with Content Keywords or crawling new content being a previously indexed page or never been indexed page?

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