stevenc81

user_id: '54eee748ec1e417d7e42e8fb', value:  { profile: { service_type: 'page', profile_id: [Object], service: 'google' }, partner_source: '', via: 'api', placement: null, shared_now: false, num_profiles: 4, top: false, source: 'api', version: null, update_id: { '$oid': '558a6751f73c1407578b456c' }, client_id: { '$oid': '5022676c169f37db0e00001c' }, partner_placement: '', scheduled_at: { '$date': 1435159200000 } }, metric: 'event.updates', date: 1435133777000 }

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs