Mr. DiGi (digiqr)'s Public Profile in the Diigo Community

I am interested in My favorite music are House,Trance,Techno. TV: color,with moving pictures inside and sound around.... Books: Hyperion cantos (and all from Dan Simmons),Ender books (Orson Scott Card) and good sci-fi. My Heros are Pat a Mat.

Member since Apr 11, 2008, follows 16 people, 9 public groups, 1385 public bookmarks (1430 total).

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Recent Bookmarks and Annotations

Účel světí koupelnu? - www.lidovky.cz about 7 hours ago
10 Ways To Destroy A SQL Database about 11 hours ago
- Don’t Monitor Error Log
- Error log may indicates first time problem occurs or warnings that your database might be facing problem. These troubles can be easily avoided or missed depending on what you do.
- 19 more annotations...
- - Don’t Fine Tune Queries
  - Developers writing bad code that caused full table scan and trying their best to trash your query cache, overloading your Innodb buffer cache with useless blocks. Plus hitting disk instead of main memory as much as possible? Well, there won’t be ANY problem since every piece of hardware is the latest, fastest and most powerful ones! Let’s just wait and see till your database fall on its knees
  - Don’t Document Procedures and Configurations
  - Why the need to enforce such tedious job when ‘we’ can maintain the job? Just you wait when the ‘we’ becomes ‘i’ and ‘i’ becomes ‘who’.
  - Don’t Backup
  - Developers or DBA who accidentally deletes data can also be of help. Deleting columns, table, rows, data or even database
  - Don’t Use Memory Wisely
  - Don’t Worry About Indexes
  - Indexes is the most effective way to destroy your database
  - The first one required you to do absolutely nothing. No indexing is required purely full scan table
  - If this doesn’t suit your taste, you can try a faster way by creating useless or unwanted indexes and ensure that your table have tons of records
  - Don’t Normalize Your Database Design
  - Skipping normalization can help contribute to bad database design which is part of the plan to destroy a database. Furthermore, without normalization, there is a good chance your system can be inaccurate, slow, and inefficient, and it might not even produce the data you expect
  - Don’t Make Policies For Database Patch
  - If you think that databases are a little more isolated than the desktop, there’s less of a security concern and thinks that your databases are more secure because they’re behind firewalls and and have a good perimeter security, you are on the right track of destroying a database
  - Don’t Bother Caching
  - The dramatics performance gain using cache table might not interest you. Scalability, flexibility, availability and performance are just some benefits that caching can gives. Multitier architecture, what bullshit
  - Don’t Use Fast or Reliable Disk
  - With the help of a single disk, you can expect OS and your database fighting for resources, serving one user at a time while others waiting for their turn. To make things worst, you can try utilize RAID-5 instead of RAID-10. May be you already are! Well, to compare between these two, RAID-5 only performed reasonably well on read while RAID-10 exceed almost two times better than RAID-5 on writes. RAID-5 only can handle 1 fails and any drive die will approximately caused 64% degration in read performance until the faulty drive is discovered. Furthermore during recovery, read performance for a RAID5 array is degraded by as much as 80% compared to RAID-5 which only degrade performance on the faulty disk itself. There are more ‘advantages‘ on RAID-5 but i will just stop here
Nejlepší populárně-vědecké knihy roku 2009 | Science World.cz about 15 hours ago
- Richard Dawkins: Příběh předka
  
  Tato kniha je pozpátku převyprávěnou evolucí, navíc obsahuje i popis celé řady metod, jimiž vlastně tyhle „žebříčky“ rekonstruujeme
- Joseph A. Tainter: Kolapsy složitých společností
  
  Úvahy o kolapsech, katastrofách a konci civilizace jsou módou – přestože (nebo protože?) se dnes lidstvu bez ohledu na ekonomickou recesi daří tak dobře jako nikdy dosud v dějinách. Chceme-li se zabývat kolapsy, například i s ohledem na rizika současnosti, klíčové je podat nějakou analýzu krizí minulých. Problém je v tom, že dnes, v době očekávané „zelené apokalypsy“ (ať už jí říkáme vyčerpání zdrojů, znečištění nebo klimatické změny), se minulé kolapsy mnohdy uvádějí ne s cílem je analyzovat, ale použít jako didaktický a moralizující příklad. Ještě děsivější a podobně módní jsou pak „duchovědné“ výklady o energii civilizace a jejím vyčerpání. Tato kniha je výjimečná, protože nabízí střízlivou analýzu a překvapivé závěry. Kolaps nakonec nevnímá jako něco negativního, ale jako pozitivní událost (alespoň z pohledu prostých lidí).
Monbana: Čokoláda s lesními plody on 2009-11-09
- - Mr. DiGi on 2009-11-09
    
    Nejlepší čokoláda jakou jsem kdy měl
Microsoft SharedView on 2009-11-09
TestingWorkflow - Trac Hacks on 2009-11-09
Homework Win! on 2009-11-09
Mockingbird on 2009-11-09
Servis iRobot - Alza.cz on 2009-11-09
Brad Fitzpatrick (of LiveJournal, now at Google) Talks About Programming on 2009-11-08
- excerpt is from the book Coders at Work
- I think it’s really important to know the whole stack even if you don’t operate within the whole stack.
- 3 more annotations...
- - In practice, nothing works.
  - Do you have any advice for self-taught programmers?
  - Always try to do something a little harder, that’s outside your reach. Read code. I heard this a lot, but it didn’t really sink in until later.

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A group for and about coders and programming -- theory, practice, and research.
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a collection of resources of all things CSS- Include how-tos, articles, resources, tools, etc...
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Share your review, tips, tricks, and ideas for using Diigo here, and discuss our features, ideas for new features, anything Diigo related. Note that bookmarks posted to this group have no relation to 'Hot Bookmarks from the Diigo Community'.
javascript

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