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How big can a MySQL database get before performance starts to degrade
... you are going to have to move to a master/slave configuration so that the read queries can run against the slaves and the write queries run against the master. However if you are not ready for this yet, you can always tweak your indexes for the queries you are running to speed up the response time...
How many socket connections can a web server handle?
Say if I was to get shared, virtual or dedicated hosting, I read somewhere a server/machine can only handle 64,000 TCP connections at one time, is this true? How many could any type of hosting handle regardless of bandwidth? I'm assuming HTTP works over TCP.
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How to replace NaN values by Zeroes in a column of a Pandas Dataframe?
...te(df.loc[idx[:,mask_1],idx[[mask_2],:]].fillna(value=0))
It's one line, reads reasonably well (sort of) and eliminates any unnecessary messing with intermediate variables or loops while allowing you to apply fillna to any multi-level slice you like!
If anybody can find places this doesn't work p...
How to use R's ellipsis feature when writing your own function?
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I read answers and comments and I see that few things weren't mentioned:
data.frame uses list(...) version. Fragment of the code:
object <- as.list(substitute(list(...)))[-1L]
mrn <- is.null(row.names)
x <- list(......
Where to place JavaScript in an HTML file?
...ends placing JS at the bottom is because the browser must go into single-threaded mode while the JS loads and then executes. If the script is in the head or in the midst of the content, the browser will "pause" while it deals with the JS. By placing the JS at the bottom, the content will be loaded a...
How can I remove a character from a string using Javascript?
...:
mystring.replace(/\/r/, '/')
Now for the excessive explanation:
When reading/writing a regEx pattern think in terms of: <a character or set of charcters> followed by <a character or set of charcters> followed by <...
In regEx <a character or set of charcters> could be one...
Is it a good practice to use an empty URL for a HTML form's action attribute? (action=“”)
... not authors. Authors must follow the author requirements. To quote How to read this specification:
In particular, there are conformance requirements that apply to producers, for example authors and the documents they create, and there are conformance requirements that apply to consumers, for ex...
The name 'ConfigurationManager' does not exist in the current context
...
@calios or if you read the original question you can see that the questioner had already added the assembly to the project in the first version of the question. For this particular assembly and version of VS it was necessary to restart the ID...
How does the HyperLogLog algorithm work?
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Didn't quite understand the paper until I read this. Now it makes sense.
– josiah
Dec 9 '14 at 22:00
5
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WSAAsyncSelect模型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...IEvent //指定哪些通知码需要发送
//FD_READ可以读套接字
//FD_WRITE 可以写套接字
//FD_ACCEPT 监听套接字有连接接入
//FD_CONNET 如果套接字连接对方主机，连...