31: Episode 31 - Limited By The Speed Of Light IOhYes podcast

31: Episode 31 - Limited by the Speed of Light

10y ago 59:16

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The News

Tweet Shoutouts

Send us some @iohyespodcast

The Discussion

SPDY overview, http://www.chromium.org/spdy/
Why is SPDY important to mobile / iOS developers?
1. Why not just straight HTTP?
  1. TCP “Slow Start” helps protect the network, but isn’t really necessary anymore and is a shortcoming of HTTP today.
2. Reduce round trips
3. Multiplexes requests
  1. prioritization
  2. interleaving
  3. gets rid of “head of line” blocking
4. Header compression
  1. headers are bloated and redundant
5. Server Push (pseudo duplexing)
CocoaSPDY https://github.com/twitter/CocoaSPDY
1. How does one integrate it into existing apps?
2. Any gotchas?
  1. CRIME Attack
  2. Content hinting by size of the compression
3. Downsides?
  1. Need a server that supports SPDY
    1. netty
    2. jetty
    3. apache (with mod_spdy)
    4. nginx
    5. Tengine
4. Any improvements / new features on the way?
  1. “Server Push” coming soon
5. In theory...works with AFNetworking
6. How can developers contribute?
  1. Github https://github.com/twitter/CocoaSPDY
  2. @goaway
Recommended server implementations?
“SPDY does not clearly outperform HTTP over cellular networks” - http://conferences.sigcomm.org/co-next/2013/program/p303.pdf
1. Heterogeneous nature of mobile networks makes it difficult to quantify performance

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The Discussion

SPDY overview, http://www.chromium.org/spdy/

Why is SPDY important to mobile / iOS developers?

Why not just straight HTTP?
1. TCP “Slow Start” helps protect the network, but isn’t really necessary anymore and is a shortcoming of HTTP today.
Reduce round trips
Multiplexes requests
1. prioritization
2. interleaving
3. gets rid of “head of line” blocking
Header compression
1. headers are bloated and redundant
Server Push (pseudo duplexing)

CocoaSPDY https://github.com/twitter/CocoaSPDY

How does one integrate it into existing apps?
Any gotchas?
1. CRIME Attack
2. Content hinting by size of the compression
Downsides?
1. Need a server that supports SPDY
  1. netty
  2. jetty
  3. apache (with mod_spdy)
  4. nginx
  5. Tengine
Any improvements / new features on the way?
1. “Server Push” coming soon
In theory...works with AFNetworking
How can developers contribute?
1. Github https://github.com/twitter/CocoaSPDY
2. @goaway

Recommended server implementations?

“SPDY does not clearly outperform HTTP over cellular networks” - http://conferences.sigcomm.org/co-next/2013/program/p303.pdf

Heterogeneous nature of mobile networks makes it difficult to quantify performance

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31: Episode 31 - Limited by the Speed of Light

Archived series ("Inactive feed" status)

The News

Tweet Shoutouts

The Discussion

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