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PostgreSQL ERROR: canceling statement due to conflict with recovery
...ndby_archive_delay and max_standby_streaming_delay to some sane value:
# /etc/postgresql/10/main/postgresql.conf on a slave
max_standby_archive_delay = 900s
max_standby_streaming_delay = 900s
This way queries on slaves with a duration less than 900 seconds won't be cancelled. If your workload req...
C# pattern to prevent an event handler hooked twice [duplicate]
...an't prevent multiple subscriptions, so, make them figure out the removal, etc... besides, why prevent someone from subscribing the same handler more than once if the want to?)
– Code Jockey
Jun 19 '14 at 15:31
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How do I capture the output of a script if it is being ran by the task scheduler?
...runs any command as a windows service and handles restarting after failure etc.
– leemes
Jun 23 '17 at 15:37
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~x + ~y == ~(x + y) is always false?
... is fixed, but my point is that it doesn't have to be those amount (8, 16, etc.).
– nhahtdh
Jun 20 '12 at 2:29
1
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Scala best way of turning a Collection into a Map-by-key?
...en here. Looking at the source code of scala.collection.mutable.MapBuilder etc, it seems to me that for each tuple, a new immutable map is created to which the tuple is added.
– jcsahnwaldt Reinstate Monica
Mar 3 '12 at 2:17
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Testing Private method using mockito
...
changes the api (you must use custom test runner, annotate the class,
etc.).
It is very easy to work around - just change the visibility of method
from private to package-protected (or protected).
It requires me to spend time implementing & maintaining it. And it
does not ma...
java.net.ConnectException: Connection refused
...to work out exactly how far the data's getting. Look at your firewall logs etc.
– Jon Skeet
Sep 30 '12 at 17:53
@JonSk...
How do I split a multi-line string into multiple lines?
...that, you will have issues with windows line ends on Linux and vice versa, etc. Moreover, it is promoting splitlines with True argument which is likely the less common way of using it...
– lpapp
Aug 27 '14 at 17:29
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How do I tell if a regular file does not exist in Bash?
...e - Check for file existence, regardless of type (node, directory, socket, etc.)
-f filename - Check for regular file existence not a directory
-G filename - Check if file exists and is owned by effective group ID
-G filename set-group-id - True if file exists and is set-group-id
-k filename - Stick...
Should all Python classes extend object?
... double-underscore methods, descriptors, super() method, property() method etc.
Example 1.
class MyClass:
pass
Example 2.
class MyClass():
pass
Example 3.
class MyClass(object):
pass
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