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Can I serve multiple clients using just Flask app.run() as standalone?
... or use some out-of-band communication (Redis, a database, the filesystem, etc.) so that each of your processes stays synced.
– Sean Vieira
Feb 12 '13 at 11:13
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ActiveRecord: size vs count
...of new messages, total elements when only a page is going to be displayed, etc.
length
Loads the required data, i.e. the query as required, and then just counts it. The way to go if you are using the data.
Example: Summary of a fully loaded table, titles of displayed data, etc.
size
It checks i...
Are multiple `.gitignore`s frowned on?
...single asterisk) in that directory and it will never show up in git status etc.
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How many bytes does one Unicode character take?
.... Those are the various unicode encodings, such as utf-8, utf-16le, utf-32 etc. They are distinguished largely by the size of of their codeunits. UTF-32 is the simplest encoding, it has a codeunit that is 32bits, which means an individual codepoint fits comfortably into a codeunit. The other encodin...
What are the differences between git branch, fork, fetch, merge, rebase and clone?
... of merging file changes (within the same file!) together during pulls or fetches/pushes to a remote repository such as GitHub. The only time you need to do manual changes (actually editing a file) is if two changes involve the same line(s) of code.
Branches
Branches allow you to preserve the ...
How does facebook, gmail send the real time notification?
...opic and the answers are comet, reverse ajax, http streaming, server push, etc.
5 Answers
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Synchronization vs Lock
...d to use that directly either (you can use Queues and Semaphore and stuff, etc, most of the time).
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Multiple queries executed in java in single statement
...nection property to those if already exists some, like autoReConnect=true, etc.. Acceptable values for allowMultiQueries property are true, false, yes, and no. Any other value is rejected at runtime with an SQLException.
String dbUrl = "jdbc:mysql:///test?allowMultiQueries=true";
Unless such ...
How to read a single char from the console in Java (as the user types it)?
...ersions, 64/32 bit, Linux via SSH, Telnet, serial port or desktop console, etc.). So far I only use it in my private test tools. But the source code is relatively small, compared to other solutions (like JLine2 which uses Jansi). So there is not much that can go wrong. I wrote it, because JLine2 doe...
Possible reason for NGINX 499 error codes
... be in your infrastructure like maybe a CDN, Load Balacer, a Varnish cache etc. Others can be in user side like a caching proxy etc.
If there are proxies on your side like a LoadBalancer / CDN ... you should set the timeouts to timeout first your backend and progressively the other proxies to the u...