Autarchy of the Private Cave

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    Self-making machine: RepRap

    4th June 2008

    A year, maybe two ago, I came across the news that someone’s constructing a “building printer”, in the sense that it is first filled with liquid concrete, and then – given the schematics of the building – “prints” concrete, producing almost-any-complexity architectural forms. Unfortunately, the names and links to that instance of object printing was lost and forgotten.

    However, I have just stumbled upon the news item about RepRap, which is claimed to be “self-reproducing”. Clearly, this isn’t true, but RepRap – replicating rapid prototyper – is able to produce (some?) of the components necessary to build another RepRap.

    I’d like to point out that

    “Think of RepRap as a China on your desktop.”

    by Chris DiBona, Open Source Programs Manager, Google Inc., is an offensive and unacceptable phrase, which shouldn’t have been put at the top of the quotes. I’d hack down that RepRap website for this single quotation, and would feel vende vindictive towards Chris, if I were Chinese. But that’s not a long time to wait to see China rising and this kind of jokes vanishing.

    That was a side note.

    Continuing on RepRap, I do find it’s uses intriguing. For the best of everybody, there’s a how-to build reprap page.

    First uses which came to my mind were… a new plastic cup, and a custom notebook/PC body/case, to put standard components into and enjoy the benefits of the perfect custom design :)

    Apart from simple things like cups and actually “fast prototyping” (which does depend on the precision of RepRap), there aren’t that much uses for the SOHO owner of RepRap. But as soon as some small-scale silicon-growing/cutting machines become available, that would definitely open up the whole new world of custom gadgeteering and home-brewed electronic wonders. Also, the level of global and local espionage activities will explode, and Big Brothers will grow like mushrooms after raining cats and dogs.

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    Posted in Hardware, Links, Misc | No Comments »

    Xname is down again

    25th May 2008

    As mentioned here and here, XName is a popular DDoS target.

    Although I did enhance reliability of my other domains with a total of 3 secondaries, I forgot to do so with the most visited bogdan.org.ua. Thus, when yesterday bogdan.org.ua stopped resolving from ns0 and ns1 of XName, the site actually became unaccessible. Other XName-hosted domains, but with more secondaries, are resolving finely even 24 hours after the primary ns failure…

    Little research based on the list of free DNS services helped me find this comparison, and made me think this way:

    • zoneedit has 18 servers, but had very unfavourable user feedback from it’s users
    • everydns has 4 servers and very good user feedback
    • editdns has 3 servers, could be a backup
    • xname has only 2

    There is also freedns.afraid.org, but there was nothing substantial about this service I could find (except for the note that if you’re using one of their subdomains, it might not be visible to Google).

    To remedy the problem, yesterday I modified the domain record to contain two more NS. This seems to have helped now. I suspect that I’ll remove XName’s secondary NS from the record, and will replace it with some other secondary NS, and then add one more secondary to get a total of 5 independent NS for the domain.

    Update: according to my blog uptime monitor, total domain downtime exceeds 33 hours. Problems started yesterday with two short downtimes (33 and 38 minutes), then domain name went down for 32 hours. Now domain is up, but that could be only because of adding more non-XName secondaries.

    Update 2:

    XName infrastructure was under heavy attack since friday 8PM (GMT+2).
    Until sunday 1PM, despite efforts of our different transit providers, www , ns0, and our internal mail server were unreachable. ns1 was reachable, but not very responsive (about 30% of DNS requests were answered). ns2 was unaffected.
    From Sunday 1PM to monday 3AM, ns0 was reachable with a responsiveness of about 50%. ns1 was fully responsive, as ns2. www and internal mail were still heavily affected.

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    Posted in Misc | No Comments »

    Less than an hour of GoDaddy MySQL5 database downtime today

    26th March 2008

    Must have been some maintenance, as I didn’t notice any changes in PHP/MySQL versions since the 7th of March.

    Update: it seems as though since that short MySQL outage everything is faster at GoDaddy shared hosting. Did they upgrade database server(s)? I have no idea, but I like the change.

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    Posted in Misc | 1 Comment »

    Fighting plagiarism

    4th February 2008

    Found this one very informative: 6 steps to stop content theft.

    Also: 5 content theft myths, and why they are false.

    And more links:

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    Posted in Links, Misc, Society, Web | No Comments »

    Updating everything

    3rd February 2008

    Today I moved my blog and gallery into MySQL5 databases from an elderly MySQL4. Also, both WP and gallery are now updated to the latest versions. Soon I’ll change the WP and G2 themes – for the lighter, less cluttered – and will remove some ads… and will also add some others instead :)

    Update generally went well, except for the message I got on the main page:

    Sorry, but you are looking for something that isn’t here.

    It was quite easy to figure out that new WP conflicts with an elderly “Sideblog” plugin – so I had to deactivate that one, and will have to update all the active plugins to avoid some other less evident problems… (actually, just completed updating all the plugins… quite a time-eater, that was.)

    Also, there will be a slight change to what and how I write. No other details for now – but stay tuned! All the changes with no exceptions are planned for the good of readers, and for the users’ benefits!

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    Posted in CMS, Misc, Web, WP PlugIns | No Comments »

    Google’s services are language-dependent

    28th November 2007

    If you want to fetch emails from some of your POP3-enabled mail accounts to Gmail, there’s a help article detailing the process. However, when using Ukrainian Gmail UI, clicking the link which should bring up the dialog box to add one out of maximum five Fetcher accounts, I got instead an offer to add the email address which I can use in the From field of my outgoing emails – and absolutely not a word about fetching emails from other POP3 accounts.

    When I switched to English (UK) UI, everything went just as described in the help article, and I added one address to fetch emails from.

    After fetching some mails, I switched back to Ukrainian UI, and – quite expectedly – the Fetcher part disappeared from the Settings/Accounts. Now I’m waiting to see if the Fetcher is nonetheless functional, or if it is also disabled… It’s functioning! So the only thing which was really changing in this case was the portion of the Settings/Accounts page not displayed while using Ukrainian UI.

    The moral of the story is: when you think that some functionality is missing in the Google service you’re using – just switch to English UI!

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    Posted in Misc, Software, Web | No Comments »

    Ukrainian web-portal bigmir.net switched from own free email service to gmail

    30th October 2007

    Just a minute ago, I was shocked after logging in to mail.bigmir.net: instead of the bigmir’s own, HTML-only email interface, I got redirected at the gmail’s “Terms and conditions”, after accepting which I found my emails in the classic gmail mailbox.

    First thing to think about: at least they did transfer all my emails to the new account.

    Second: hey, they had given up their own email interface! Are they leaving the web-portal market of Ukraine? Was the part of their team (which later formed MI6) too important to handle their exodus with no consequences? Is that just a desire to give customers “better” interface and not invest anything into development?

    I hope this won’t be a trend, for every service to have Google behind their servers. Or even just behind the name, to avoid extra complexity of having a server.

    Finally, I think I’ll get used. But it was only yesterday, that I read the Google anti-utopia, where Big Brother’s name is (evidently) Google, and it’s webcams and microphones and search history define each person’s future AND guilt. Scary…

    And I wonder which will be the next service of bigmir.net, “outsourced” like their email.

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    Posted in Misc, Web | No Comments »