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Favourite performance tuning tricks [closed]
...Dump / Reload the database (drastic, but might fix corruption)
Build new, more appropriate index
Run DBCC to see if there is possible corruption in the database
Locks / Deadlocks
Ensure no other processes running in database
Especially DBCC
Are you using row or page level locking?
Lock the tab...
Where and how is the _ViewStart.cshtml layout file linked?
...he site.
This enables a lot of UI flexibility. It also allows you to more
easily write view logic once, and avoid repeating it in multiple
places.
Also see this.
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What are good alternatives to SQL (the language)? [closed]
...ect join syntax would be different, functions like GROUP_CONCAT would have more regular syntax rather than sticking more keywords in the middle of the parentheses to control its behavior... create your own laundry list of inconsistencies and redundancies in SQL that you'd like/expect to see smoothed...
What is the Swift equivalent to Objective-C's “@synchronized”?
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You can use GCD. It is a little more verbose than @synchronized, but works as a replacement:
let serialQueue = DispatchQueue(label: "com.test.mySerialQueue")
serialQueue.sync {
// code
}
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What is JavaScript's highest integer value that a number can go to without losing precision?
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Are GUID collisions possible?
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Actually that isn't true any more. It was true for v1 GUIDs, but not for the current v4 ones. See en.wikipedia.org/wiki/Globally_Unique_Identifier#Algorithm for more info.
– Greg Beech
Oct 8 '08 at 23:10
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What are the drawbacks of Stackless Python? [closed]
...his gives people a skewed idea that Stackless is games-oriented, when it's more that games are more easily continuation oriented.
Another difficulty has been the source code. In its original form it required changes to many parts of Python, which made Guido van Rossum, the Python lead, wary. Part o...
java.sql.SQLException: - ORA-01000: maximum open cursors exceeded
.... In the context of Java, it happens when the application attempts to open more ResultSets than there are configured cursors on a database instance.
Common causes are:
Configuration mistake
You have more threads in your application querying the database than cursors on the DB. One case is where...
Best way to serialize an NSData into a hexadeximal string
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Nice, but two suggestions: (1) I think appendFormat is more efficient for large data since it avoids creating an intermediate NSString and (2) %x represents an unsigned int rather than unsigned long, although the difference is harmless.
– svachalek
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Is there a point to minifying PHP?
...Private Server so that you can control the configuration. VPSes are often more expensive than normal shared hosting, but far less expensive than a real dedicated server. Popular VPS providers include Slicehost and Linode. Don't forget that you should be benchmarking and profiling your code first!...