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Can TCP and UDP sockets use the same port?
...ontinue accepting connections on the original socket whilst simultaneously servicing multiple clients each of which will be triggering receive events on their own sockets.
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How to run Django's test database only in memory?
...tricks and I'm quite happy.
How to set up it for MySQL on Ubuntu:
$ sudo service mysql stop
$ sudo cp -pRL /var/lib/mysql /dev/shm/mysql
$ vim /etc/mysql/my.cnf
# datadir = /dev/shm/mysql
$ sudo service mysql start
Beware, it's just for testing, after reboot your database from memory is lost!
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running Rails console in production
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Note: This answer assumes you are using Heroku as your hosting service.
It depends on what hosting service you are using. For Heroku, you can go to your terminal and type in
heroku run rails console
This will load up the rails console for your production site and will allow you to c...
How does Amazon RDS backup/snapshot actually work?
...would make sense for Amazon to be using this infrastructure to provide RDS services.
Typically, a MySQL backup, in contrast to a snapshot, involves using a tool like mysqldump to create a file of SQL statements that will then reproduce the database. The database does not need to be frozen to do this...
What is the difference between the operating system and the kernel? [closed]
...t of the operating system and closer to the hardware it provides
low level services like:
device driver
process management
memory management
system calls
An operating system also includes applications like the user interface (shell, gui, tools, and services).
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How to check if AlarmManager already has an alarm set?
...r.MINUTE, 1);
AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 1000 * 60, pendingIntent);
The way you would check to see if it is active is to:
boolean alarmUp = (PendingInte...
PendingIntent does not send Intent extras
My MainActicity starts RefreshService with a Intent which has a boolean extra called isNextWeek .
3 Answers
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What's the point of Spring MVC's DelegatingFilterProxy?
...seful piece of the Servlet Spec, allowing us to apply AOP-like concepts to servicing of HTTP requests. Many frameworks use Filter implementations for various things, and it's not uncommon to find custom implementations of them because they're very simple to write and useful. In a Spring app, most of...
Can't su to user jenkins after installing Jenkins
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jenkins is a service account, it doesn't have a shell by design. It is generally accepted that service accounts shouldn't be able to log in interactively.
I didn't answer this one initially as it's a duplicate of a question that has bee...
The type must be a reference type in order to use it as parameter 'T' in the generic type or method
...el m = (SomeModel)Activator.CreateInstance(typeof(SomeModel)); Service<SomeModel> s = new Service<SomeModel>(); s.Work(m); } }
– ChrisS
Jun 23 '11 at 8:34
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