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MongoDB/NoSQL: Keeping Document Change History
A fairly common requirement in database applications is to track changes to one or more specific entities in a database. I've heard this called row versioning, a log table or a history table (I'm sure there are other names for it). There are a number of ways to approach it in an RDBMS--you can wri...
MongoDB with redis
...collections cannot really be used to implement a real TTL. Redis has a TTL-based expiration mechanism, making it convenient to store volatile data. For instance, user sessions are commonly stored in Redis, while user data will be stored and indexed in MongoDB. Note that MongoDB 2.2 has introduced a ...
How to perform Callbacks in Objective-C
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Install a Python package into a different directory using pip?
...r this example):
export PYTHONPATH=/opt/mysterypackage-1.0/python-deps/lib64/python2.6/site-packages:$PYTHONPATH
export PATH=/opt/mysterypackage-1.0/python-deps/bin:$PATH
Using virtualenv is still a better and neater solution!
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What is @RenderSection in asp.net MVC
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How to atomically delete keys matching a pattern using Redis
... you need that feature you should simply partition the data by numetic database or server, and use flush / flushdb
– Marc Gravell♦
Oct 26 '14 at 16:45
11
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How to force the browser to reload cached CSS/JS files?
...Now, we write the following PHP function:
/**
* Given a file, i.e. /css/base.css, replaces it with a string containing the
* file's mtime, i.e. /css/base.1221534296.css.
*
* @param $file The file to be loaded. Must be an absolute path (i.e.
* starting with slash).
*/
fun...
Access denied for user 'root@localhost' (using password:NO)
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no you cant.. mysql will not start: c:\wamp64\bin\mysql\mysql5.7.23\bin>mysql ERROR 1045 (28000): Access denied for user 'ODBC'@'localhost' (using password: NO)
– Jaxx0rr
Dec 19 '18 at 19:44
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throw Error('msg') vs throw new Error('msg')
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What are the differences between -std=c++11 and -std=gnu++11?
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