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Russell91/sshrc

Russell91/sshrc

github.com
Travis Hardman Travis Hardman
3 years ago
Use your vimrc on remote servers
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Speaking UNIX: Stayin' alive with Screen

Speaking UNIX: Stayin' alive with Screen

www.ibm.com
Travis Hardman Travis Hardman
4 years ago
Create and manage multiple shells on your console - preserve ssh sessions even if you lose your connection.
To temporarily detach from the Screen session and all its windows, click Ctrl-a, then d (lowercase D for "detach").
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screen -list
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Because only one screen session exists, you can reattach to it directly with screen -r
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click Ctrl-a, then c (lowercase C for "create") to create a new window
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To view the available windows in a session in a menu-like interface, click Ctrl-a, then the double quotation mark (") key in the current window
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To dispose of the current window, type exit at the window's shell prompt, or click the keyboard shortcut Ctrl-a, then k (lowercase K for "kill")
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To name a window, activate the window. Click Ctrl-a A (uppercase A, for "Annotate")
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You can name a window when you create it with screen -t name
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5 easy tips to accelerate SSL

5 easy tips to accelerate SSL

unhandledexpression.com
Travis Hardman Travis Hardman
4 years ago
SSLHonorCipherOrder On SSLCipherSuite ALL:!ADH:!EXP:!LOW:!RC2:!3DES:!SEED:RC4+RSA:+HIGH:+MEDIUM
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KeepAlive On
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So, if you have intermediate CAs for your server’s certificate, configure your webserver to present the full certification chain. With Apache, you just need to concatenate the CA certificates, and indicate them in the configuration with this directive:

SSLCertificateChainFile /path/to/certification/chain.pem
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set the HTTP header “Cache-Control: public” for the static assets. That way, the browser will cache them.
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  • it must have “Keep-Alive” and “Cache-control: public” activated
  • it should serve all your assets from only one domain!

Why the last one? Well, even if multiple domains point to the same IP, the browser will do a new handshake for every domain.

For CDN content
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Using RabbitMQ — Celery 2.5.5 documentation

Using RabbitMQ — Celery 2.5.5 documentation

docs.celeryproject.org
Travis Hardman Travis Hardman
5 years ago
$ sudo rabbitmqctl status
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Never use kill to stop the RabbitMQ server, but rather use the rabbitmqctl command:

$ sudo rabbitmqctl stop
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Why upgrading your Linux Kernel will make your customers much happier

Why upgrading your Linux Kernel will make your customers much happier

samsaffron.com
Travis Hardman Travis Hardman
5 years ago
Slow Start happens to be very problematic in the context of the web and HTTP.
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Transferring 34ks of data from NY to Sydney takes 4 round trips with an initial window of 2 which explains the image above. It makes sense that I would be waiting over a second for 34K.
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Translated into figures, the Linux box with the IW of 10 is 21 percent faster when you look at total time. If you discount the connection round trip it is about 25 percent faster. All of this without a single change to the application.
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Every 100ms latency you have costs you 1% of your sales. Here is a free way to get a very significant speed boost.
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Blitz - Making load and performance testing a fun sport

blitz.io
Travis Hardman Travis Hardman
5 years ago
With rapid, iterative deployment cycles, Blitz helps you understand the performance of your app throughout the DevOps cycl
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Instantly burst up to 50,000 concurrent users from multiple points of presence around the world.
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