hendzen

66 ms·

661.
by hendzen 13y ago
From the article: "I don’t understand why double spending can’t be prevented in a simpler manner using two-phase commit. What drawbacks and advantages does it have compared to the full Bitcoin protocol? uppose Alice tries to double sp
662.
by hendzen 13y ago
They own a subsidiary, called Certicom that owns nearly all of the key patents surrounding Elliptic Curve Cryptography.
663.
by hendzen 13y ago
The article itself is not badly written. Keep in mind many people on this forum have a significant financial incentive to ensure that people don't think this way about BTC.
664.
by hendzen 13y ago
Just to nitpick a bit, the Two Generals problem is actually different than the Byzantine Generals Problem. 2GP deals with the (simpler) case of achieving consensus in a distributed system with unreliable communications. That is, messages ca
665.
Claiming Bitcoin's Bug Bounty(hackingdistributed.com)
74 points by hendzen 13y ago|12 comments
666.
by hendzen 13y ago
Just to reference some of the interesting bits to actual transactions/addresses: Satoshi address - https://blockchain.info/address/12higDjoCCNXSA95xZMWUdPvXNmk... Satoshi -> DPR transfer - https://b
667.
by hendzen 13y ago
A lot of academic work has been done on using GPUs for general purpose workloads. I would recommend familiarizing yourself with the literature if you have not already. Some work that may be interesting to you is the idea of Persistent Threa
668.
by hendzen 13y ago
typical hacker news top comment
669.
by hendzen 13y ago
It's a nice project to implement a pipelined processor in logisim: http://ozark.hendrix.edu/~burch/logisim/
670.
by hendzen 13y ago
How much do you think RocksDB/LevelDB performance is impacted by the use of relatively coarse-grained locking? Another LevelDB fork, HyperLevelDB [1] implemented a fine grained scheme with performance benefits. Disclaimer: I am working
671.
by hendzen 13y ago
Unfortunately, not in a particularly clever way. CP systems such as MongoDB, HBase, etc. don't have this problem since each datum has an authoritative master. As you can imagine, this can result in some operational...unpleasantness due
672.
by hendzen 13y ago
I think the juggernaut here is WEKA [0], I've seen it used in the real world far more than anything else. [0] - http://www.cs.waikato.ac.nz/ml/weka/
673.
by hendzen 13y ago
Gruber must be feeling pretty smug right now: http://daringfireball.net/linked/2013/10/02/qualcomm-a7
674.
by hendzen 13y ago
I would be more concerned about CC agencies selling the data. I'd rather have the data public than only available to large corporations.
675.
by hendzen 13y ago
Actually, there has been some recent research [0] in cryptography that shows it is possible to produce binaries that are obfuscated in such a way such that they are computationally infeasible to deobfuscate (see the linked reference for a f
676.
by hendzen 13y ago
I agree. Having a concentration in a subfield (Distributed Systems, AI, Security, etc) gives you the ability to read papers (both classics and new research) in that field and have the ability to stay current with new ideas & techniques
677.
Elliptic Curve Cryptography Patents(en.wikipedia.org)
2 points by hendzen 13y ago|1 comments
678.
by hendzen 13y ago
From what I understand, this feature originally came from the acquisition of a startup called Karma. I wonder what the acqui-hired employees are going to do now.
679.
by hendzen 13y ago
Because a configuration service has to maintain consensus [0] in the face of arbitrary network partitions. Unfortunately, Redis is unable to do so in a clustered configuration [1]. Attaining this level of fault tolerance in a distributed en
680.
by hendzen 13y ago
I just took out my credit card and bought a pair. Looking forward to developing on their platform.
681.
by hendzen 13y ago
Previous discussion: https://news.ycombinator.com/item?id=6138205
682.
by hendzen 13y ago
Here's the original text: The Integrated Systems Group of SAIC has a career opening for a Tier 2 XKEYSCORE Systems Engineer, for the Mission Programs Division (MPD), located in Columbia, Maryland. JOB SUMMARY:
683.
SAIC job posting for 'XKEYSCORE Systems Engineer'(jobs.saic.com)
13 points by hendzen 13y ago|5 comments
684.
The Faithful Embrace YouVersion, A Bible App(nytimes.com)
4 points by hendzen 13y ago|0 comments
685.
by hendzen 13y ago
Since the storage engine is a modified version of Tokyo Cabinet, I am assuming that you can have simultaneous readers, but a writer will lock everyone else out. From the Tokyo Cabinet specs [0]: 'Tokyo Cabinet provides two modes to con
686.
by hendzen 13y ago
Since the underlying storage system is based on a modified version of Tokyo Cabinet [0], I don't see why it wouldn't be appropriate for small apps where a discrete DB would be overkill. [0] - http://fallabs.com/tok
687.
by hendzen 13y ago
I've heard the term ODM used for this purpose [0]. [0] - https://github.com/jmkgreen/morphia
688.
by hendzen 13y ago
If you're willing to pay - this is probably the canonical textbook. http://www.amazon.com/Computer-Organization-Design-Fourth-Ed...
689.
by hendzen 13y ago
Average response time can be misleading. I'd like to see what the 95% percentile response time is.
690.
by hendzen 13y ago
FYI: http://docs.mongodb.org/manual/tutorial/expire-data/

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