jbellis

82 ms·

541.
by jbellis 14y ago
Time series works very well on Cassandra. If anything, avoiding global-ordering hot spots is a Good Thing. http://rubyscale.com/blog/2011/03/06/basic-time-series-with-... http://www.datastax.com/dev/blog/advanced-time-series-with-c...
542.
by jbellis 14y ago
I wondered the same thing, but I do know that it's not threads vs processes. :)
543.
by jbellis 14y ago
Unless you're CPU bound on the client, it's irrelevant whether you're using multiple threads or multiple processes to generate the load. Assuming of course that you're not using a GIL-bound client, which the Java-based YCSB does not.
544.
by jbellis 14y ago
Hmm, there has to be more to it than that. VoltDB throughput went down scaling from 1 node to 4 in every workload but RSW. This is not a sign of a system that would handle many more requests if only there were more client parallelism.
545.
by jbellis 14y ago
I've seen approximately zero correlation between degree status and ability to write code. The best programmer I've ever worked with has a PhD... but so have at least two of the terrible ones. I also submit that if programming is "not exact
546.
by jbellis 14y ago
"Efficient" here means that unlike most (all?) popular document databases -- and postgresql's hstore -- appending an item to a list or adding an entry to a map does not require rewriting the entire collection, it just writes the new data.
547.
Efficient collections as column values in Cassandra 1.2(datastax.com)
3 points by jbellis 14y ago|1 comments
548.
by jbellis 14y ago
Too bad, my One X is a great phone. Best camera I've had in a phone by a wide margine, and has permanent nav buttons so it doesn't need to waste screen space on that. Also better battery life than the Galaxy Nexus I tried first.
549.
by jbellis 14y ago
Trying to find where they say what license it's under, anyone have better luck?
550.
by jbellis 14y ago
In related news, German electricity is 30% more expensive than French, and 300% more expensive than American. http://en.wikipedia.org/wiki/Electricity_pricing#Global_elec...
551.
by jbellis 14y ago
If only the laws of physics could be repealed with guts and hard work.
552.
by jbellis 14y ago
"Consistency problems" is a red herring; Cassandra can be easily asked to sacrifice availability for consistency [on a per-request basis], if that's what you want: http://www.datastax.com/docs/1.1/dml/data_consistency Facebook never used
553.
by jbellis 14y ago
I appreciate the sentiment, but it's worth distinguishing between the design and implementation here. Cassandra does take a lot of inspiration from the Bigtable and Dynamo papers, so we benefit from the thinking of a handful of very smart
554.
by jbellis 14y ago
If it's complex enough you need to script it, it's complex enough to make troubleshooting a bitch when something goes wrong in that script...
555.
Looking with Cassandra into the future of Atlas(metabroadcast.com)
68 points by jbellis 14y ago|36 comments
556.
by jbellis 14y ago
Hasn't google goggles been doing this for a couple years now? http://googlemobile.blogspot.com/2010/05/translate-real-worl...
557.
by jbellis 14y ago
What design improvements are you considering to make this go faster, should it be necessary again?
558.
by jbellis 14y ago
no, it's the kernel livelocking in response to a call made by the jvm
559.
by jbellis 14y ago
Your information is obsolete. Cassandra will only send a single copy of your updates cross-region, which will then be rereplicated within each region if necessary.
560.
by jbellis 14y ago
You're missing the forest for the trees. The topic of the article is about how good was motivated by creating a better language for systems software than C++, and hypothesizing why it's nevertheless getting more traction with the scripting
561.
by jbellis 14y ago
I'm with the grandparent. Every language that I've used that was created after C has included exceptions, and never once have I missed checking errno. I can understand why, coming from a C++ context, you'd want to avoid them like the plagu
562.
by jbellis 14y ago
It's not an unreasonable way to view the world, though. "Show me your code and conceal your data structures, and I shall continue to be mystified. Show me your data structures, and I won't usually need your code; it'll be obvious." -ESR, pa
563.
by jbellis 14y ago
So, it's an alternate interface for my calendar?
564.
by jbellis 14y ago
To save some frustration, I'd recommend starting with the DataStax Cassandra documentation: http://www.datastax.com/docs/1.1/index For "timeline" type data like this, I'd recommend reading these two explanations: http://rubyscale.com/blo
565.
by jbellis 14y ago
You're misinformed and/or looking at older models. As I pointed out to another response, I'm talking about the 420s model, not the 420. The 420s is substantially slimmer, and mine has an i7. I believe the 420s does max out at 8GB, but it'
566.
by jbellis 14y ago
Please note that I cited the 420s, not 420. It's under 4 pounds, which is half a pound lighter than the new mpb. It's slimmer than my 15" old-gen mpb, although I believe the retina is slightly thinner still.
567.
by jbellis 14y ago
I don't buy that thin-and-light requires glued batteries, soldered ram, and proprietary hdd connectors. As exhibits A, B and C I cite my Thinkpad 420s and the machines I almost got instead, the Samsung series 9 and Sony Vaio Z.
568.
by jbellis 14y ago
Congrats on the release, Marko!
569.
by jbellis 14y ago
Wow, raganwald is 50?! I still remember when he stood up at the first YC Startup School to respond to pg's assertion that startups are for young people with no obligations to say, What better example to set for your kids, than to do somethi
570.
by jbellis 14y ago
I bought an Acer Aspire Timeline laptop on Sept 16, 2009. I returned it on October 10. Amazon took a 15% "Partial Refund Deduction" off the refund amount.

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