timmaxw

16 ms·

91.
by timmaxw 10y ago
I suspect the primary cause was engineering incompetence rather than a desire to save money. The water quality problems were caused by a lack of corrosion inhibitors; corrosion inhibitors would have cost $140/day, which is cheap compar
92.
by timmaxw 10y ago
I don't think that current laser systems are anywhere near powerful enough to destroy a landing craft. I think that reason why lasers are potentially effective against aircraft and missiles is that they are intrinsically fragile and re
93.
by timmaxw 10y ago
Follow-up studies were unable to reproduce the Rat Park results. https://www.ncbi.nlm.nih.gov/pubmed/9148292?dopt=Abstract https://www.ncbi.nlm.nih.gov/pubmed/2616610?dopt=Abstract
94.
by timmaxw 10y ago
https://en.wikipedia.org/wiki/Tests_of_special_relativity https://en.wikipedia.org/wiki/Tests_of_general_relativity
95.
by timmaxw 10y ago
Behind the specific problem of eBay prioritizing buyers over sellers, there's a more general problem of how marketplaces can determine who's right in a dispute. Other commenters have suggested taking a video while packing up the i
96.
by timmaxw 10y ago
I made a printed circuit board to make it easy to connect things to a 1000 watt computer power supply I had lying around. Similar adapters are available commercially, but I couldn't find one that could manage 1000 watts. http:/&#
97.
by timmaxw 10y ago
Most of their hand signals are similar to hand signals used by the Occupy movement [1]. However, the Occupy movement "agree" signal involves wiggling the fingers [2]. It seems to have come from the ASL sign for "applause&quot
98.
by timmaxw 10y ago
From reading your other comments in this thread, it seems like you have misunderstood what the AGPL does. If you modify RethinkDB and run the modified RethinkDB server as part of a public-facing web app, you must release the code for your m
99.
by timmaxw 10y ago
If you'd scrolled another 10cm down the page, you would have seen the testimonial from NASA: > At NASA, RethinkDB is radically simplifying how we provide real-time services in support of Extra-Vehicular Activity. -- Collin Estes, Di
100.
by timmaxw 10y ago
> My understanding would have been that AGPL means all code that interfaces with the database (i.e. all code that uses ReQL) must also be AGPL. The client drivers are licensed separately under the Apache license. Only the database server
101.
by timmaxw 10y ago
The calculator you linked is measuring household income, not individual income. Rerunning your numbers with a calculator that uses individual income [1], I find that the top 1% of individual earners make at least $270k/year and an inco
102.
by timmaxw 10y ago
Idea: Make the Roomba treads light-colored. Point an LED and photodetector at the top of the tread, the part that's inside the robot. If the reflectivity of the surface ever changes suddenly, then either something is stuck in the wheel
103.
by timmaxw 10y ago
> If the average response is < 1 sec than a 60 second standard deviation means that many responses are being made before the query is sent. Imagine if 99.99% of queries take 1 millisecond, and the remaining 0.01% of queries take 6000
104.
by timmaxw 10y ago
> Minor failover is automatic, but major failover requires manual intervention to repair tables even when there's no data loss. That's a little confusing and not obvious. Wasn't this fixed in RethinkDB 2.1? Or are you refe
105.
by timmaxw 10y ago
Did you mean the other way around? I think someArray[] is a flexible array member and someArray[0] is a constraint violation.
106.
by timmaxw 10y ago
It's not trying to make a cohesive point; it's a collection of short, unrelated posts bundled together. Many of Matt Levine's posts [0] are in this style, including his most recent post [1]. [0] http://www.bloomber
107.
by timmaxw 11y ago
During normal operation, RethinkDB uses the standard Raft protocol for managing configuration operations. The Raft protocol only uses the clock for heartbeats and election timeouts. So we're not using the clock as a trusted source of t
108.
by timmaxw 11y ago
tim@rethinkdb here. coffeemug's earlier comment is not quite right. There were two reasons why we went for this hybrid approach where Raft handles metadata but not documents: because of how Raft interacts with the storage system, and b
109.
by timmaxw 11y ago
In the benchmark script [1] that the author provided on his GitHub account, there's a call to ensure_index() for MongoDB. And he's reporting an average latency of 0.15ms for MongoDB read operations, so it's pretty clear that
110.
by timmaxw 11y ago
> the author has corrected the discrepancies since then As of the time I posted this comment, the blog post still seems to be comparing indexed MongoDB operations against non-indexed RethinkDB operations. Under those conditions I'd
111.
by timmaxw 11y ago
I'd say that a CPU that needs a clock but does not have one is not Turing-complete. CSS plus an infinite stream of user input is Turing-complete, but CSS itself is not Turing-complete. I should make it clear that I'm not saying, &
112.
by timmaxw 11y ago
I wouldn't count that as Turing-completeness. It requires the user to repeatedly press the tab and space keys to advance the computation; the amount of computation that the CSS is doing for each press of the tab and space keys is trivi
113.
by timmaxw 12y ago
Actually, look at some of the things that @aphyr has tweeted about FoundationDB: https://twitter.com/aphyr/status/542792308492484608 https://twitter.com/obfuscurity/status/405016890306985
114.
by timmaxw 12y ago
RethinkDB engineer here. RethinkDB currently doesn't support automatic failover, so this test couldn't be performed for RethinkDB yet. But when we implement automatic failover we're planning to test it against Jepsen. That wi
115.
by timmaxw 12y ago
Note that the 9ms performance claim in this article is mistaken. The author has issued a correction: http://rob.conery.io/2015/04/17/rethinkdb-2-0-is-amazing/
116.
by timmaxw 12y ago
But that copper hasn't been destroyed; it's just tied up in the form of pipes, power lines, etc. If civilization collapsed, our successors could "mine" pure copper from the ruins of our cities. If anything, pure copper w
117.
by timmaxw 12y ago
Auto-failover is hard because of some fairly deep-rooted aspects of how RethinkDB is implemented. When one of your servers dies, the RethinkDB cluster won't allow any reconfigurations until it reconnects. If the server is permanently d
118.
by timmaxw 12y ago
http://www.offshoreenergytoday.com/cormorant-alpha-shutdown-... estimates that the Cormorant Alpha shutdown cost $10,000,000/day, or about $100/second. That figure comes from multiplying the oil production (90,000
119.
by timmaxw 12y ago
This documentation is for RethinkDB 1.15, but the cool features in Slava's presentation are arriving in RethinkDB 1.16.
120.
by timmaxw 12y ago
Right now you have to start over if your changefeed gets disconnected. But we're discussing better options; see < https://github.com/rethinkdb/rethinkdb/issues/3471> . We don't have any plans to

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