jchrisa

19 ms·

151.
by jchrisa 8y ago
Congrats to the DynamoDB team for going beyond the traditional limits of NoSQL. There is a new breed of databases that use consensus algorithms to enable global multi-region consistency. Google Spanner and FaunaDB where I work are part of t
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by jchrisa 8y ago
https://en.wikipedia.org/wiki/Slave_patrol https://plsonline.eku.edu/insidelook/brief-history-slavery-a...
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by jchrisa 8y ago
The paper makes the Diffie-Hellman tree they use pretty easy to grok: https://eprint.iacr.org/2017/666.pdf
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by jchrisa 8y ago
Powered by ground based microwaves, it could be simplified into a flying antennae.
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by jchrisa 8y ago
The answer is that if everything were the same but the rich had less money, is that the rich would be less in a position to capture the regulatory framework and tilt the playing field in their favor. Eg maybe without trickle-down, the facto
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by jchrisa 8y ago
Rent. Are the landlords local?
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by jchrisa 8y ago
A resource allocation system that didn't have this problem should out-compete one that suffers these information masking flaws. So we just need fully automated space communism* to arise once, and it will overwhelm the less effective re
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by jchrisa 8y ago
The future is already here, it's just not evenly distributed.
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by jchrisa 8y ago
Rethinking our property system need not be draconian. The economic solutions to a steady state economy have been on the shelf for years. The ideology of growth will need a humiliating defeat, and then folks will be ready to accept alternati
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by jchrisa 8y ago
If a portion of potential alcoholics become cannabis addicts instead, that's another net positive.
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Mars may have enough oxygen underneath its surface for life(engadget.com)
3 points by jchrisa 8y ago|0 comments
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by jchrisa 8y ago
We have a roadmap item to add blockchain style tamper evidence to the storage engine. The crypto we'll use is certainly a step along the path you describe. If you have a use case, we love talking to developers to help make sure we are
163.
by jchrisa 8y ago
The property that attracts the most mission critical use cases is the ability to keep transactions rolling without loss of guarantees, even while hitting the typical cloud failure modes. Some applications can't make tradeoffs between c
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by jchrisa 8y ago
Our deployment model assumes a single administrator. With reasonable network operations, Byzantine fault tolerance is largely irrelevant. (Although it's an important problem in other contexts.)
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by jchrisa 8y ago
The log is distributed across the cluster, and can be partitioned. The protocol is optimized for long physical distances between replicas. See links elsewhere in the thread to Raft.
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by jchrisa 8y ago
The global log is replicated using a Raft-like consensus mechanism, so that all replicas have a copy of the log, and agree on its order. So even if one replica site is lost, the others have a full copy of the log, and can continue. You can
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by jchrisa 8y ago
You can read the paper that inspired the FaunaDB transaction protocol here: http://cs.yale.edu/homes/thomson/publications/calvin-sigmod1... Or if you want a very concise description, see slide 13 from Daniel
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by jchrisa 8y ago
Thanks for the bump I needed to go fix that. Sound is off now.
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by jchrisa 8y ago
We have a whole suite of internal correctness verification tools, in addition to which we are also using Jepsen. We don't have an official report out yet, but you can get a preview of our progress here: https://fauna.com&#x2
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by jchrisa 8y ago
This FaunaDB ledger tutorial gives a feel for how you'd build out your application logic: https://fauna.com/blog/tutorial-how-to-create-and-query-a-le... If you want to see a query with precondition checks etc, th
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by jchrisa 8y ago
You mean economic growth is a mirage?
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by jchrisa 8y ago
In some ways, the point of war is to burn resources for no reason. Solving the crisis of overproduction. So if we can do it with less war, maybe that's a step in the right direction.
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by jchrisa 8y ago
The model of deploying a single page app that calls serverless endpoints and cloud databases, has architectural reasons to be preferred. Multi-cloud is a great way to be robust to cloud failures, and have better negotiating leverage with yo
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by jchrisa 8y ago
I have an e-bike and the difference it makes is qualitative. Instead of being slower than driving, it is faster because I skip traffic jams. Instead of feeling like a drag on days when I am tired, the bike makes me feel like Superman. If yo
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by jchrisa 8y ago
Supervenience is the relation of being made of a substrate, but not predicted by its laws. Supervenience is distinct from entailment, you are conflating the two. https://en.wikipedia.org/wiki/Supervenience Suggesting t
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by jchrisa 8y ago
I'm not talking about athletes, I'm talking about out of shape dads vs out of shape moms.
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by jchrisa 8y ago
You can be a monist and still believe in physics and free-will. https://en.wikipedia.org/wiki/Anomalous_monism
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by jchrisa 8y ago
Too bad they weren't able to follow through.
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by jchrisa 8y ago
In Portland we call it Zoobombing, because you can ride light rail to the zoo and zoom back downtown: http://www.zoobombpdx.org/
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by jchrisa 8y ago
In my day to day life in the biking world, the women who don't train can keep up with the men who do.

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