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高并发服务端分布式系统设计概要 - C/C++ - 清泛网 - 专注C/C++及内核技术

...息,万一Client不缓存怎么办?呵呵,不用担心,Client端的API也是由我们设计的,之后才面向Web前端。 之后要说的,就是图中的“Global Heartbeat”,这又是个什么东西呢?可认为这是一个管理Global Master和Global Slave的节点,Global Mast...
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Best way to define error codes/strings in Java?

...re's certainly a better implementation of the enum solution (which is generally quite nice): public enum Error { DATABASE(0, "A database error has occurred."), DUPLICATE_USER(1, "This user already exists."); private final int code; private final String description; private Error(int code...
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How should I edit an Entity Framework connection string?

... I had to explicitly call save on the app.config file for the designer to recognise the connection string had been deleted. – Rossco May 9 '14 at 2:37 ...
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Creating and Update Laravel Eloquent

... There is and it's called firstOrNew / firstsOrCreate – malhal Aug 24 '14 at 11:59 ...
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How do I build a numpy array from a generator?

... lists. This is necessary so that space for each item can be consecutively allocated in memory. Consecutive allocation is the key feature of numpy arrays: this combined with native code implementation let operations on them execute much quicker than regular lists. Keeping this in mind, it is techni...
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Naming convention for Scala constants?

... The officially recommended style (and I do mean officially) is the first style, camel case with first letter are upper case. It's laid down clearly by Odersky on Programming in Scala. The style is also followed by the standard library...
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Best practices for catching and re-throwing .NET exceptions

... that bombs here } catch (Exception ex) { throw; } throw ex; is basically like throwing an exception from that point, so the stack trace would only go to where you are issuing the throw ex; statement. Mike is also correct, assuming the exception allows you to pass an exception (which is recom...
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Explain Morris inorder tree traversal without using stacks or recursion

... / \ (Y) Z / \ C D (Y) above refers to Y and all of its children, which are omitted for recursion issues. The important part is listed anyway. Now that the tree has a link back to X, the traversal continues... A \ Y / \ (A) B \ X / \ (Y)...
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Eclipse/Java code completion not working

...o previously suffering from Eclipse thinking my project was in 1.5 despite all options saying otherwise, so it must have been corrupted during this issue. – Philip Guin Jun 30 '13 at 6:51 ...
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Preventing scroll bars from being hidden for MacOS trackpad users in WebKit/Blink

... One thing to mention is that, in my testing and a really old comment by someone else it seems you can't have an always-on scrollbar AND the momentum-like scrolling that people are used to with iOS. Doing the momentum-scrolling CSS caused my custom scrollbars to disappear. ...