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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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➊
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Transfer-Rate
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Transfer-Rate
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➋
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Latenz
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RENDER C NETWORK D
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➌
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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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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