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Performante Web Apps mit Varnish & Co. Christoph Lühr / @chluehr getITtogether - Berlin 2014

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Christoph Lühr Head of Development

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basilicom SEIT 2000

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Image source: http://www.flickr.com/photos/ethanlindsey/321225525/ CC BY 2.0

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DEV

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(#) Internet

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Unicode Character 'HAPPY PERSON RAISING ONE HAND' (U+1F64B)

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1 2 3

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Performante Web-Apps

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statisch dynamisch

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Performance ➊ ➋ ➌

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Transfer-Rate

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Transfer-Rate

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Latenz

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RENDER C NETWORK D

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X

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X

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x Faktoren

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CPU RAM HDD NETZ

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CPU RAM HDD NETZ

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t

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CPU RAM HDD NETZ

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R A M

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R A M

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CPU RAM HDD LAN = IO

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IO

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IO

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RAM SSD WAN HDD LAN 0.05 μs 5 μs x100 x100 50 μs x1.000 x10 5000 μs x100.000 x100 500000 μs x10.000.000 x100

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IO

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CACHE

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IO Queue + Worker

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t

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statisch dynamisch

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statisch dynamisch

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Reverse- Proxy

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Varnish

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Varnish

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Varnish

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Varnish

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Multiple Backends

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Varnish

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Varnish

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Varnish

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Varnish

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Varnish

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Varnish

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Partielles Caching Edge Side Inc.

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Varnish

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Varnish

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FUBAR? Nachteile

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● Content++ = RAM++ Hardwareanforderungen ● !SSL Workaround: Pound Offloader ● Purge / Warm-Up Management ● Konfiguration VCL

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Ratiopharm? Alternativen

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CDN Content Delivery Network

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Fallstudie / Beispiel Adventskalender

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App Größe 2.6 MB

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HTTP Requests 16 Req/App

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js js js js js js js js js js js js

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Ladezeit bei >6 Mbit 1-3 s

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Transferrate ~300 Mbit/s

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Peak Transfer (max.) ( ~4000 Mbit/s )

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Transfervolumen / Top-H ~500 GB

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HTTP Zugriffe 260 Req/s

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System: Eine VM. (Varnish, Pound, Apache/PHP)

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CPU RAM HDD NETZ CPU RAM HDD NETZ CPU RAM HDD NETZ

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Christoph Lühr email: [email protected] twitter: @chluehr web: http://basilicom.de ! ? basilicom