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分布式系统的事务处理 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...本任意时刻都能读到新值。比如:文件系统,RDBMS,Azure Table都是强一致性的。
从这三种一致型的模型上来说,我们可以看到,Weak和Eventually一般来说是异步冗余的,而Strong一般来说是同步冗余的,异步的通常意味着更好的性能...
Regular expression to match non-ASCII characters?
...he knows what he's talking about.)
The way he implemented it is by adding tables of characters with certain properties. Then, when you contruct a regex with his library, \p{charclass} gets replaced with [allthecharactersintheclass].
...
What is the purpose of Flask's context stacks?
...alues in a script that should be run from the shell. For example, a "setup_tables.py" script...
from myapp import app, db
# Set up models
db.create_all()
In this case, the Flask-SQLAlchemy extension knows about the app application, but during create_all() it will throw an error complaining about...
Efficiently replace all accented characters in a string?
...
What I'm trying to do is make the sorting of the jQuery tablesorter plugin work correctly for table data in German. The plugin can take an user-defined function to extract the string to sort on, which is what I have to do or the resulting sort order will be wrong.
...
Should a Netflix or Twitter-style web service use REST or SOAP? [closed]
...been waiting for a question like this for close to a year now. It was inevitable that this day would come and I am sure we are going to see many more questions like this in the coming months.
The warning signs
You are absolutely correct, it does take longer to build RESTful clients than SOAP clien...
Role-based access control (RBAC) vs. Claims-based access control (CBAC) in ASP.NET MVC
... it will never change or hardly change. So, in your database, you create a table of permissions (claims) and user-permission relation. From your admin panel, you can set permission (claim) for each user who can do what. You can assign 'CanCreateCustomer' permission (claim) to anyone you like and onl...
构建高并发高可用的电商平台架构实践 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...NOOP)
c、server以及存储引擎级别(连接管理、网络管理、table管理、日志)
包括cache/buffer、Connection、IO
d、应用级别(比如索引的考虑,schema的优化适当冗余;优化sql查询导致的CPU问题和内存问题,减少锁的范围,减少回表扫描...
Best architectural approaches for building iOS networking applications (REST clients)
...x with its own gotchas. People implement complex logic to get valid, predictable caching like e.g. monoidal caching with projections based on profunctors. You can read about this beautiful library called Carlos to understand more. And don't forget that Core Data can really help you with all caching ...
What is move semantics?
...on unit? By contrast, the return value rule simply has to check the symbol tables to determine whether or not the identifier after the return keyword denotes an automatic object.
You can also pass the parameter by value. For move-only types like unique_ptr, it seems there is no established idiom ye...
Git and Mercurial - Compare and Contrast
...l for this writeup
Summary
Here it would be nice to have some syntax for table, something like in PHPMarkdown / MultiMarkdown / Maruku extension of Markdown
Repository structure: Mercurial doesn't allow octopus merges (with more than two parents), nor tagging non-commit objects.
Tags: Mercurial u...
