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What's the “average” requests per second for a production web application?
...o have 10-20 per second
Wikipedia seems to be 30000 to 70000 per second spread over 300 servers (100 to 200 requests per second per machine, most of which is caches)
Geograph is getting 7000 images per week (1 upload per 95 seconds)
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How to save a data.frame in R?
...you could also use saveRDS.
To save:
saveRDS(foo, file="data.Rda")
Then read it with:
bar <- readRDS(file="data.Rda")
The difference between saveRDS and save is that in the former only one object can be saved and the name of the object is not forced to be the same after you load it.
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Enter triggers button click
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It is important to read the HTML specifications to truly understand what behavior is to be expected:
The HTML5 spec explicitly states what happens in implicit submissions:
A form element's default button is the first submit button in tree ...
How to validate an Email in PHP?
...eg family (PCRE Regex Functions). There are a small amount of differences, reading the Manual should suffice.
Update 1: As pointed out by @binaryLV:
PHP 5.3.3 and 5.2.14 had a bug related to
FILTER_VALIDATE_EMAIL, which resulted in segfault when validating
large values. Simple and safe wor...
LESS CSS nesting classes
... Sass requires a complete re-write of your styles, while in less you can already compile your existing styles and start re-writing them piece by piece.
– topless
May 8 '13 at 12:34
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TypeScript: problems with type system
... finding yourself in a situation where a useless error message like Cannot read property 'getContext' of null is thrown), I recommend taking control over your application boundaries.
Make sure the element contains a HTMLCanvasElement
const getCanvasElementById = (id: string): HTMLCanvasElement =&g...
Getting error while sending email through Gmail SMTP - “Please log in via your web browser and then
I'm having problems with gmail smtp server. I already read many posts here in StackOverflow about that subject.
9 Answers
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Is Java's assertEquals method reliable?
...ans it will return false. If I use equals, however, the equals method will read the two pieces of paper and see that they say the same thing ("Foo"), and so it'll return true.
The bit that gets confusing with Strings is that the Java has a concept of "interning" Strings, and this is (effectively) a...
What's the purpose of META-INF?
...et them in web3.0-container via
http://localhost/myapp/button.jpg
> Read more
The /META-INF/MANIFEST.MF has a special meaning:
If you run a jar using java -jar myjar.jar org.myserver.MyMainClass you can move the main class definition into the jar so you can shrink the call into java -jar m...
How to replace all occurrences of a character in string?
... True. My general philosophy is to do the easy (to write and to read) thing until such time as the inefficiencies are causing real problems. There are some circumstances where you might have humoungous strings where O(N**2) matters, but 99% of the time my strings are 1K or less.
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