The one case that seems to be a sweet spot for using the query cache is when you frequently need to look up an entity based on a natural key. A natural key is a field or fields that form a unique way to identify an entity in a table but is not the primary key. For example, you might have a Person table with an auto-generated primary key in the database. But several identifiers for a Person might form a natural key, such as social security number or email address.
The work of telling computers what to do is markedly different than it was even five years ago, so don't get caught asleep at the console. Peter Wayner profiles 15 technologies transforming how developers work today.
After having spent several years developing primarily in C++ , I missed having an enum in Java until it was finally introduced with J2SE 5 . The long wait was worth it because the Java enum is much more useful and powerful than its C++ counterpart.
This article is about understanding java classpath and how classpath works in java, how to set classpath in windows and Linux, how to set classpath in JAR file, how to use classpath behavior for debugging
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