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Create an index on a huge MySQL production table without table locking
...ters:
Master A has your MySQL database running on it
Bring Master B into service and have it replicate writes from Master A ( B is a slave of A)
Perform the schema update on Master B. It will fall behind during the upgrade
Let Master B catch up. Invariant: Your schema change MUST be capable of p...
Server is already running in Rails
...process
$ kill -9 5946
$ rm tmp/server.pids
foreman start etc start the service
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Why doesn't delete set the pointer to NULL?
...deology.
If you need safety there's a wide range of smart pointers at you service or you can write your own - better and smarter.
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SQL Server, convert a named instance to default instance?
...c Ports (i.e. empty/blank)
Set TCP Port to 1433
Click Ok
Go to SQL Server Services
Right-click your SQL Server (INSTANCENAME) and click Restart
This will make the named instance listen on the default port. Note : You can have only one instance configured like this - no two instances can have sa...
How to decide between MonoTouch and Objective-C? [closed]
... to with .Net's everything-AND-the-kitchen-sink frameworks? MonoTouch.
Web services? MonoTouch.
Syntactically, they both have their advantages. Objective-C tends to be more verbose where you have to write it. You'll find yourself writing code with C# you wouldn't have to write with ObjC, but it goes...
Can't open config file: /usr/local/ssl/openssl.cnf on Windows [duplicate]
...). This distribution is "semi-officially" linked from OpenSSL's site as a "service primarily for operating systems where there are no pre-compiled OpenSSL packages".
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In-App Billing test: android.test.purchased already owned
...
Add this code to a thread to initiate consume request.
int response = mService.consumePurchase(3, getPackageName(), purchaseToken);
Here for the purchase test, purchaseToken is
purchaseToken = "inapp:" + getPackageName() + ":android.test.purchased";
And
if (response == 0)
then the consum...
How to kill/stop a long SQL query immediately?
... is almost always true except if you do certain operations like call a web service from SQLCLR. If your attention cannot reach the server is usually due to scheduler overload.
But if your query is part of a transaction that must rollback then rollback cannot be interrupted. If it takes 10 minutes t...
How to check whether mod_rewrite is enable on server?
...All
</Directory>
</VirtualHost>
sudo a2enmod rewrite
sudo service apache2 restart
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How to make a HTTP request using Ruby on Rails?
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HTTParty is a good choice if you're making a class that's a client for a service. It's a convenient mixin that gives you 90% of what you need. See how short the Google and Twitter clients are in the examples.
And to answer your second question: no, I wouldn't put this functionality in a controlle...