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Postgres could not connect to server
...starting up. To fix it:
$ rm /usr/local/var/postgres/postmaster.pid
$ brew services restart postgresql
and then all is well.
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How connect Postgres to localhost server using pgAdmin on Ubuntu?
...tgres trust
Restart the server
sudo service postgresql restart
Login into psql and set password
psql -U postgres
ALTER USER postgres with password 'new password';
Again open the file pg_hba.conf and change this line:
Database administrative login ...
Get battery level and state in Android
...vel as a percentage:
BatteryManager bm = (BatteryManager) context.getSystemService(BATTERY_SERVICE);
int batLevel = bm.getIntProperty(BatteryManager.BATTERY_PROPERTY_CAPACITY);
Read BatteryManager | Android Developers - BATTERY_PROPERTY_CAPACITY
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$watch an object
...
Little performance tip if somebody has a datastore kind of service with key -> value pairs:
If you have a service called dataStore, you can update a timestamp whenever your big data object changes.
This way instead of deep watching the whole object, you are only watching a timest...
How much overhead does SSL impose?
...d. That's why it can be very helpful to enable SSL sessions for your HTTPS service, where many connections are made. For a long-lived connection, this "end-effect" isn't as significant, and sessions aren't as useful.
Here's an interesting anecdote. When Google switched Gmail to use HTTPS, no addi...
Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)
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forgot start mysql services!
– GeekHades
Mar 30 '18 at 10:08
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Apache2: 'AH01630: client denied by server configuration'
...ed
Also don't forget to restart the apache server after these changes (# service httpd restart)
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Algorithm to implement a word cloud like Wordle
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Does your service offer an API?
– bart
Feb 24 '14 at 6:23
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http to https apache redirection
...ructive and will bring in the new config file. /etc/init.d/httpd reload || service httpd reload
– Rebecca Dessonville
Jan 6 '16 at 15:42
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kill -3 to get java thread dump
...obtain thread dump of a process running under different user, like windows service: stackoverflow.com/questions/1197912/…
– Vadzim
Dec 11 '17 at 11:42
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