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通过FastCGI Cache实现服务降级 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，架构图如下：
Degradation
实现的关键点在于通过error_page处理异常，并且完成服务降级：
limit_conn_zone $server_name zone=perserver:1m;
error_page 500 502 503 504 = @failover;
fastcgi_cache_path
/tmp
levels=1:2
keys_zone=failover:100m
i...
Git - Undo pushed commits
...
814
You can revert individual commits with:
git revert <commit_hash>
This will create a new...
LEN function not including trailing spaces in SQL Server
...the DATALENGTH function - see http://msdn.microsoft.com/en-us/library/ms173486(SQL.90).aspx - which "returns the number of bytes used to represent any expression".
Example:
SELECT
ID,
TestField,
LEN(TestField) As LenOfTestField, -- Does not include trailing spaces
DATA...
How do I center align horizontal menu?
...>Butt 3</a></li>
<li><a href="#">Button 4</a></li>
</ul>
</div>
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Can't find the 'libpq-fe.h header when trying to install pg gem
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PostgreSQL: How to pass parameters from command line?
... |
edited May 28 '19 at 8:43
Nam G VU
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Reliable method to get machine's MAC address in C#
...address.</returns>
private string GetMacAddress()
{
const int MIN_MAC_ADDR_LENGTH = 12;
string macAddress = string.Empty;
long maxSpeed = -1;
foreach (NetworkInterface nic in NetworkInterface.GetAllNetworkInterfaces())
{
log.Debug(
"Found MAC Address: "...
How do I pass multiple parameters into a function in PowerShell?
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Dave F
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answered Feb 14 '11 at 2:04
x0nx0n
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Ternary Operator Similar To ?:
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edited May 23 '17 at 11:47
Community♦
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answered Feb 9 '11 at 16:45
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Callback functions in Java
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answered Jan 14 '09 at 16:48
GantGant
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