Site uses cookies to provide basic functionality.
Javascript rendering is set to off by default when visiting the site via .onion and .i2p domains. It can be enabled back again in user's settings section. Javascript rendering set to off means, that you can disable javascript in your browser now and the site will remain functional.
There is also IRC server now available via native IRC clients or non javascript web based one.
Fonts can be adjusted in user's settings section as well.
Check FAQ for more.

OK

Networks
Languages
1 2 3 5 7 11 16 23 34 50 73 106 154 225 327 456 475 690 769 984 1003 1132 1234 1244 1245 1246 1247 1248 1305 1353 1386 1409 1425 1436 1443 1448 1452 1454 1456 1457 1458 1459 ▲ ▼
Postgres is rich with options for indexing. First you’ve got a variety of types, and beyond that you can do a variety of things with each of these such as create unique indexes, use conditions to index only a portion of your data, or create indexes based on complex expressions or functions. In cases where you commonly use various PostgreSQL functions in your application or reporting you can get some great gains from this. Let’s take a loo....
Postgres is rich with options for indexing. First you’ve got a variety of types, and beyond that you can do a variety of things with each of these such as create unique indexes, use conditions to index only a portion of your data, or create indexes based on complex expressions or functions. In cases where you commonly use various PostgreSQL functions in your application or reporting you can get some great gains from this. Let’s take a loo....
Full Steam Ahead - zacs.site - 13 years ago - eng
Almost a week ago I did something I rarely do: I wrote an article out of frustration. I had pushed and pushed myself to not only write every day, but to publish something at least once a day as well. But some days, there just isn’t anything to write about; sometimes, I need more than a day to work through an idea; and some days, I just don’t feel like writing. Instead of a strong readership, I only had frustration to show for my efforts. ..
The first time I saw the Nickelodeon cartoon Avatar: The Last Airbender , I was sitting in a friend’s closet. The floor was a mess, with clothes and toys strewn all about. It had rained almost constantly since morning, so the lot of us had stayed inside for most of the day. I was ten, and the show captivated me. That feeling stuck with me until roughly six years later when I sat down to watch the series from beginning to end. Even at sixte..
Since January first, 2009, Jonathan Mann has written a song every day. Every single day, for four years, four months, and four weeks exactly, Jonathan Mann, without fail, wrote and produced a song. That’s 1609 days, and 1609 songs. Those who have a hard time writing every day, feel free to take notes. Permalink.
But most importantly, what the hell does Yahoo do with all the porn?” Ben Brooks asking the tough questions. I love everything he does, from his writing to The B&B Podcast , retired on February 7th of this year. If you haven’t ever read any of his work, this piece wouldn’t be a bad place to start. Permalink.
We Have Only One Story - zacs.site - 13 years ago - eng
In the past I have heard it said that there exists but one story, that every book and movie is nothing more than retelling of that single plot. Perhaps most famously, John Steinbeck once said something to this effect in his book East of Eden: Permalink.
One of the most common Exadata performance problems I see is that the direct path reads (and thus also Smart Scans) don’t sometimes kick in when running full scans in serial sessions. This is because in Oracle 11g onwards, the serial full segment scan IO path decision is done dynamically, at runtime, for every SQL execution – and for every segment (partition) separately. Whether you get a direct path read & smart scan, depends on the curr....
One of the most common Exadata performance problems I see is that the direct path reads (and thus also Smart Scans) don’t sometimes kick in when running full scans in serial sessions. This is because in Oracle 11g onwards, the serial full segment scan IO path decision is done dynamically, at runtime, for every SQL execution – and for every segment (partition) separately. Whether you get a direct path read & smart scan, depends on the curr....
This is a legacy post referring to how this blog was originally setup, using Pelican and Dropbox. It no longer reflects the current state of affairs, which can be read about here . This website is powered solely by the wonderful static blogging engine known as Pelican . A static blogging engine means that each time a change is made i.e. a new post is created, the entire site is rebuilt as static HTML & CSS pages. This may sound labor..
Nearly every day I see a new CSS module, jQuery boilerplate, or HTML5 template posted to Hacker News, or an article announcing the release of the latest version of Ember.js, whatever that is. Every so often, I follow the link out of curiosity; and every time, I close the page, disappointed. Permalink.
About 5 years ago I wrote about the risks that connecting to Oracle processes via debuggers may cause  and what are (in my opinion) the safer and less safer options for taking stack samples from running Oracle processes. In the end of that article I listed different options for getting a stack traces and whether they were safe or not. For example, ORADEBUG-based process stack traces (DUMP ERRORSTACK, SHORT_STACK and event the process/s....
About 5 years ago I wrote about the risks that connecting to Oracle processes via debuggers may cause  and what are (in my opinion) the safer and less safer options for taking stack samples from running Oracle processes. In the end of that article I listed different options for getting a stack traces and whether they were safe or not. For example, ORADEBUG-based process stack traces (DUMP ERRORSTACK, SHORT_STACK and event the process/s....
DreamHost DreamObjects image Image from DreamHost . For a recent project, I needed to find a good, reliable, and inexpensive cloud storage solution to integrate with my Drupal site. As we know, developers are creatures of habit, and we often reuse the same solutions for similar problems. In looking for cloud storage solution, I first went to the two main competitors: Amazon S3 and Rackspace . I don't want to spend a lot of time ....
DreamHost DreamObjects image Image from DreamHost . For a recent project, I needed to find a good, reliable, and inexpensive cloud storage solution to integrate with my Drupal site. As we know, developers are creatures of habit, and we often reuse the same solutions for similar problems. In looking for cloud storage solution, I first went to the two main competitors: Amazon S3 and Rackspace . I don't want to spend a lot of time ....
Announcing Your Time - dhariri.com - 13 years ago - eng
I’m reasonably proficient at SQL – a coworker when pseudocoding some logic for him pointed out that my pseudocode is what he thought was executable SQL . I’m fully capable of writing clear and readable SQL – which most SQL is not. Despite that I still have several bad habits when it comes to SQL. Without further adieu heres some of my dirty laundry so hopefully others can not make the same mistakes. Order/Group by Column Numbers Wh....
I’m reasonably proficient at SQL – a coworker when pseudocoding some logic for him pointed out that my pseudocode is what he thought was executable SQL . I’m fully capable of writing clear and readable SQL – which most SQL is not. Despite that I still have several bad habits when it comes to SQL. Without further adieu heres some of my dirty laundry so hopefully others can not make the same mistakes. Order/Group by Column Numbers Wh....
Well, it’s the end of the month and I have to post something for May. Despite Game of Snails being broken and nigh-unplayable, I’m posting it anyway. If you want to check it out, here are some disclaimers:
Some time ago, Diego Santamarta casually mentioned that the shoes he was wearing were not regular flip flops, but rather some kind of sandal which I had never heard about. “Oh ok” was my less than enthusiastic answer. In the meantime, and even before, I had been reading about barefoot running, even though I had never run more than a few hundred meters without panting uncontrollably. Yes, 15 years smoking does take it’s toll. After two yea....
Some time ago, Diego Santamarta casually mentioned that the shoes he was wearing were not regular flip flops, but rather some kind of sandal which I had never heard about. “Oh ok” was my less than enthusiastic answer. In the meantime, and even before, I had been reading about barefoot running, even though I had never run more than a few hundred meters without panting uncontrollably. Yes, 15 years smoking does take it’s toll. After two yea....
Trade offs As a developer you’re constantly faced with issues of choice: What library is best? What framework is best? What platform should we deploy on? Most of the time there isn’t a clear winner. The decision you make comes down to a series of trade offs. Do you want to optimize for developer happiness or performance? Do you care more about platform maturity or cost? One trade off Ember.js has made relates to how it favors long liv..
Text editor UI - honza.pokorny.ca - 13 years ago - eng
What I don’t understand is: why should you ever care how your editor looks, unless you’re trying to win a screenshot competition? The primary factor in looking good should be the choice of a good font at a comfortable size, and a syntax coloring theme that you like. And that is not something specific to an editor. Editors like Emacs and vi have almost no UI! If Emacs is configured right, the only UI it has is the modeline and the minibu..
Text editor UI - honza.pokorny.ca - 13 years ago - eng
What I don’t understand is: why should you ever care how your editor looks, unless you’re trying to win a screenshot competition? The primary factor in looking good should be the choice of a good font at a comfortable size, and a syntax coloring theme that you like. And that is not something specific to an editor. Editors like Emacs and vi have almost no UI! If Emacs is configured right, the only UI it has is the modeline and the minibu..
In the previous post I explained how to list Exadata disk layout and topology details with the exadisktopo scripts, in this post I’ll introduce one celldisk overview script, which I use to quickly see the celldisk configuration, specs and error statuses. The cellpd.sql script (Cell P hysical D isk) will show the following output: SQL> @exadata/ cellpd.sql Show Exadata cell versions from V$CELL_CONFIG.... DISKTYPE CELLNAME STATUS TO....
In the previous post I explained how to list Exadata disk layout and topology details with the exadisktopo scripts, in this post I’ll introduce one celldisk overview script, which I use to quickly see the celldisk configuration, specs and error statuses. The cellpd.sql script (Cell P hysical D isk) will show the following output: SQL> @exadata/ cellpd.sql Show Exadata cell versions from V$CELL_CONFIG.... DISKTYPE CELLNAME STATUS TO....
Here are two more Exadata scripts for listing the end-to-end ASM<->Exadata disk topology from V$ASM_ views and from V$CELL_CONFIG. These scripts see both the ASM level layout and the storage cell-level disk topology. The exadisktopo.sql script shows all disks starting from the ASM diskgroup layer, going deeper and deeper all the way to the OS disk device level in the storage cells. It uses outer joins, so will show celldisks even if the..
Here are two more Exadata scripts for listing the end-to-end ASM<->Exadata disk topology from V$ASM_ views and from V$CELL_CONFIG. These scripts see both the ASM level layout and the storage cell-level disk topology. The exadisktopo.sql script shows all disks starting from the ASM diskgroup layer, going deeper and deeper all the way to the OS disk device level in the storage cells. It uses outer joins, so will show celldisks even if the..
Previously in this series we’ve seen the definition of a category and a bunch of examples, basic properties of morphisms, and a first look at how to represent categories as types in ML. In this post we’ll expand these ideas and introduce the notion of a universal property. We’ll see examples from mathematics and write some programs which simultaneously prove certain objects have universal properties and construct the morphisms involved.
Previously in this series we’ve seen the definition of a category and a bunch of examples, basic properties of morphisms, and a first look at how to represent categories as types in ML. In this post we’ll expand these ideas and introduce the notion of a universal property. We’ll see examples from mathematics and write some programs which simultaneously prove certain objects have universal properties and construct the morphisms involved.
Previously in this series we’ve seen the definition of a category and a bunch of examples, basic properties of morphisms, and a first look at how to represent categories as types in ML. In this post we’ll expand these ideas and introduce the notion of a universal property. We’ll see examples from mathematics and write some programs which simultaneously prove certain objects have universal properties and construct the morphisms involved.
Shifting Gears - zacs.site - 13 years ago - eng
When I wrote Writer’s Guilt a few hours ago, I was done. I was drained. I was finished, and I was mad. Nevertheless, for an article written in anger, it turned out to be pretty good. As I walked downstairs after publishing it, I couldn’t help but feel just a little proud. Then I had a banana, an orange, sat down on the couch, and watched The Fast and The Furious: Tokyo Drift for the first time in much too long. I had forgotten how great..
Did you know that there’s something like Active Session History also in the Exadata storage cells? ;-) The V$CELL_THREAD_HISTORY view is somewhat like V$ACTIVE_SESSION_HISTORY, but it’s measuring thread activity in the Exadata Storage Cells: SQL> @desc v$cell_thread_history Name Null? Type ------------------------------- -------- ---------------------------- 1 CELL_NAME VARCHAR2(1024) 2 SNAPSHOT_ID NUMBER 3 SNAPSHOT_TIME DAT....
Did you know that there’s something like Active Session History also in the Exadata storage cells? ;-) The V$CELL_THREAD_HISTORY view is somewhat like V$ACTIVE_SESSION_HISTORY, but it’s measuring thread activity in the Exadata Storage Cells: SQL> @desc v$cell_thread_history Name Null? Type ------------------------------- -------- ---------------------------- 1 CELL_NAME VARCHAR2(1024) 2 SNAPSHOT_ID NUMBER 3 SNAPSHOT_TIME DAT....
Writer's Guilt - zacs.site - 13 years ago - eng
Some days, I want to write. Other days, I don’t. Today is one of the latter, and yet I still wrote this. Why? Permalink.
This Monday I went to the doctor about my leg pain. She ruled out a stress fracture and said it was most likely a calf strain, but that the pain I describe could also point to deep vein thrombosis.
iTextEditors - brettterpstra.com - 13 years ago - eng
Speaking of iOS text editors , Brett Terpstra created an amazing chart comparing more iOS text editors than anyone could possibly use in a lifetime. This list went around the internet a few months ago, but it certainly merits linking to again. To anyone searching for a new editor, start here. Permalink.
I used to write almost exclusively on my computer. Then, my spacebar started going bad sometime around November of last year, inconveniently just before I launched this blog. Especially problematic given how much and how often I like to write, I nevertheless decided not to fix it: right around that time the flame war around the iPad as solely a content consumption versus a multi-faceted creation device was raging across the internet, and I ..
I clearly remember the summer of 2010 when we were about to launch our product Visual Website Optimizer out of beta and almost all the…
Google+ has been the target of numerous jokes in the tech community. Many blogs claim that adoption has been minimal and that the product isn’t appealing to common users over alternatives such as Facebook. I have noticed quite the opposite is true. Many of my extended family in the Czech Republic have somewhat recently acquired new Android devices. One by one, they have added me to their circles on Google+. My stream is now full of pi..
Google+ has been the target of numerous jokes in the tech community. Many blogs claim that adoption has been minimal and that the product isn’t appealing to common users over alternatives such as Facebook. I have noticed quite the opposite is true. Many of my extended family in the Czech Republic have somewhat recently acquired new Android devices. One by one, they have added me to their circles on Google+. My stream is now full of pi..
Powerful Bloggers - zacs.site - 13 years ago - eng
Quite some time ago I came across a very interesting statement in the most unlikely of places, in a “tips and tricks” piece sensationally titled 10 Rare But Simple Blog Tricks that Make You Look Like a Genius , where the author writes: Permalink.
Low-End Apple Bloggers - zacs.site - 13 years ago - eng
On January 18th Horace Dediu made two observations and posted them to Twitter. Shortly after those tweets went live, I began constructing a short article around them. Either unable or simply unwilling to finish the article though, the beginnings of this piece have remained in Simplenote since then. Now, with my Instapaper queue finally completely empty for the first time since I bought the app, I finally have the time and — more importantly..
1 2 3 5 7 11 16 23 34 50 73 106 154 225 327 456 475 690 769 984 1003 1132 1234 1244 1245 1246 1247 1248 1305 1353 1386 1409 1425 1436 1443 1448 1452 1454 1456 1457 1458 1459 ▲ ▼
93 visitors online