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Memcache(d) vs. Varnish for speeding up 3 tier web architecture
...
Varnish is in front of the webserver; it works as a reverse http proxy that caches.
You can use both.
Mostly write -- Varnish will need to have affected pages purged. This will result in an overhead and little benefit for modified pages.
Mostly read -- Varnish will probably cover most...
How to check if a symlink exists
... difference between -L and -h ? in my bash ( version 4.2.53(1)-release (x86_64-redhat-linux-gnu ) man bash is identical for both -L and -h and they behave the same, ie they check that file actualy is a link and don't care whether the linked to file exists or not.
– philippe lha...
How to grep a text file which contains some binary data?
... Yes, except that this won't work on OSX unless you do the following: LC_ALL="C" grep -a
– Chris Stratton
Feb 10 '19 at 18:05
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EProgrammerNotFound exception in Delphi?
...n Side of Delphi" session.
IMO, it should be used more often ;-)
Read on:
http://wings-of-wind.com/2010/01/12/best-programming-feature-ever/
http://blog.barrkel.com/2008/11/reference-counted-pointers-revisited.html
PS: I don't think it exists in Delphi Prism, FreePascal or C# (but it should). <...
if…else within JSP or JSTL
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<%@ taglib prefix='c' uri='http://java.sun.com/jsp/jstl/core' %>
<c:set var="val" value="5"/>
<c:choose>
<c:when test="${val == '5'}">
Value is 5
</c:when>
<c:otherwise>
Value is not 5
</c:otherwise&...
Why is HTML5 input type datetime removed from browsers already supporting it?
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Source http://www.w3.org/TR/html5/
"The following features are at risk and may be removed due to lack of implementation. ..<input type=datetime>.."
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How to expire session due to inactivity in Django?
...uld handle the whole process...
from datetime import datetime
from django.http import HttpResponseRedirect
class SessionExpiredMiddleware:
def process_request(request):
last_activity = request.session['last_activity']
now = datetime.now()
if (now - last_activity).minut...
What's the difference between := and = in Makefile?
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From http://www.gnu.org/software/make/manual/make.html#Flavors:
= defines a recursively-expanded variable. := defines a simply-expanded variable.
share
...
Binary Data in MySQL [closed]
...binary files into
// an sql database. More information can be found at http://www.phpbuilder.com/
?>
<html>
<head><title>Store binary data into SQL Database</title></head>
<body>
<?php
// Code that will be executed if the fo...
unsigned APK can not be installed
...nt and distribution, you should read this article atleast once, i suggest: http://developer.android.com/guide/publishing/app-signing.html.
For your question, you can find the below line in above article:
All applications must be signed. The system will not install an application that is not si...