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Memcache(d) vs. Varnish for speeding up 3 tier web architecture
...ed pages purged. This will result in an overhead and little benefit for modified pages.
Mostly read -- Varnish will probably cover most of it.
Similar read & write -- Varnish will serve a lot of the pages for you, Memcache will provide info for pages that have a mixture of known and new data all...
LIKE vs CONTAINS on SQL Server
... case, a full text index). Of course, this form of query is only available if the column is in a full text index. If it isn't, then only the first form is available.
The first query, using LIKE, will be unable to use an index, since it starts with a wildcard, so will always require a full table sca...
How to Sync iPhone Core Data with web server, and then push to other devices? [closed]
...on between multiple devices, such as an iPad or a Mac. There are not many (if any at all) sync frameworks for use with Core Data on iOS. However, I have been thinking about the following concept:
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Shortest distance between a point and a line segment
... const float l2 = length_squared(v, w); // i.e. |w-v|^2 - avoid a sqrt
if (l2 == 0.0) return distance(p, v); // v == w case
// Consider the line extending the segment, parameterized as v + t (w - v).
// We find projection of point p onto the line.
// It falls where t = [(p-v) . (w-v)] /...
How to set timer in android?
...preferable. Also remember to clean up your tasks in onPause, saving state if necessary.
import java.util.Timer;
import java.util.TimerTask;
import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.Handler.Callback;
import andr...
Eclipse JUNO doesn't start
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.Snap file exists only while Eclipse is opened. If the file still there when eclipse is closed, you have to remove it. If you remove workbench file, you will lose the Eclipse layout. Anyway, removing workbench.xmi solves the problem.
– Milton
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Using regular expression in css?
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An ID is meant to identify the element uniquely. Any styles applied to it should also be unique to that element. If you have styles you want to apply to many elements, you should add a class to them all, rather than relying on ID selectors...
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How to force LINQ Sum() to return 0 while source collection is empty
Basically when I do the following query, if no leads were matched the following query throws an exception. In that case I'd prefer to have the sum equalize 0 rather than an exception being thrown.
Would this be possible in the query itself - I mean rather than storing the query and checking query.A...
What are all the differences between src and data-src attributes?
What are differences and consequences (both good and bad) of using either data-src or src attribute of img tag? Can I achieve the same results using both? If so, when should be used each of them?
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How can I display a JavaScript object?
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If you want to print the object for debugging purposes, use the code:
var obj = {prop1: 'prop1Value', prop2: 'prop2Value', child: {childProp1: 'childProp1Value'}}
console.log(obj)
will display:
Note: you must only log t...