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Redis strings vs Redis hashes to represent JSON: efficiency?
...s://127.0.0.1:6379/0>
> redis.flushdb
=> "OK"
> ap redis.info(:memory)
{
"used_memory" => "529512",
**"used_memory_human" => "517.10K"**,
....
}
=> nil
# me_set( 't:i' ... ) same as hset( 't:i/512', i % 512 ... )
# txt...
PHP: Storing 'objects' inside the $_SESSION
...ssion objects. Whenever the server gets a request, it looks up the Session info out of its hashtable of session objects based on the ID the client submitted with the request. All this extra work is a double whammy on scalability (a big reason HTTP is stateless).
Whammy One: It reduces the work a s...
How can I see the entire HTTP request that's being sent by my Python application?
...ps://httpbin.org/headers')
Example Output
$ python requests-logging.py
INFO:requests.packages.urllib3.connectionpool:Starting new HTTPS connection (1): httpbin.org
send: 'GET /headers HTTP/1.1\r\nHost: httpbin.org\r\nAccept-Encoding: gzip, deflate, compress\r\nAccept: */*\r\nUser-Agent: python-r...
libevent+protobuf轻松搭建tcpserver - C/C++ - 清泛网 - 专注C/C++及内核技术
...(client->sock_fd, (struct sockaddr*)&client_addr, &len) == 0)
LOG_INFO(“Client(%s:%u) connection closed or Error occured — %d\n”,
inet_ntoa(client_addr.sin_addr),
ntohs(client_addr.sin_port),
what);
else
LOG_INFO(“Cl...
Git for beginners: The definitive practical guide
...
HEAD config hooks/ objects/
branches/ description info/ refs/
If for whatever reason you wish to "de-git" a repository (you wish to stop using git to track that project). Simply remove the .git directory at the base level of the repository.
cd ~/code/project001/
rm ...
Where are an UIWebView's cookies stored?
...ng this in a category. Here's what I ended up using:
NSHTTPCookieStorage+Info.h
#import <Foundation/Foundation.h>
@interface NSHTTPCookieStorage (Info)
+ (NSDictionary*) describeCookies;
+ (NSDictionary *) describeCookie:(NSHTTPCookie *)cookie;
@end
NSHTTPCookieStorage.m
@implementati...
Difference between variable declaration syntaxes in Javascript (including global variables)?
...lt;script src="external.js"></script>
/* external.js */
console.info(varDeclaration == true); // could be .log, alert etc
// returns false in IE8
console.info(noVarDeclaration == true); // could be .log, alert etc
// returns false in IE8
console.info(window.hungOnWindow == true); // cou...
Is onload equal to readyState==4 in XMLHttpRequest?
...ById('log').innerHTML += msg + "<br/>";
}
function log(xhr, evType, info) {
var evInfo = evType;
if (info)
evInfo += " - " + info ;
evInfo += " - readyState: " + xhr.readyState + ", status: " + xhr.status;
logText(evInfo);
}
function selected(radio) {
document.get...
e.printStackTrace equivalent in python
...rent exception. See http://docs.python.org/library/traceback.html for more information.
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Setting git parent pointer to a different parent
...sm (see definition of Git grafts in Git Glossary and documentation of .git/info/grafts file in Git Repository Layout documentation) to change parent of a commit, check that it did correct thing with some history viewer (gitk, git log --graph, etc.) and then use git filter-branch (as described in "Ex...