What is the closest to ConcurrentHashMap and NavigableMap in Java?

[Russel Winder]

On Fri, 2013-11-15 at 20:10 +0100, Jacek Furmankiewicz wrote:
> if I recall from the initial Go discussion, the Go folks were 
> saying that for close to realtime SLAs the goroutine/channel 
> approach may have some scalability limits...which is why they 
> started recommending the RW mutex approach in the end.
> 
> Now, that was a few months ago, since then Go 1.1 (and soon 1.2) 
> came out, so that may be a false statement at this time.

I guess they were hinting at scheduling issues where there are many more
goroutines than kernel threads available. Not a problem for Web services
and applications but a potential problem for hard real-time. I don't
think 12.0, 1.1, 1.2,… will change the core issue – though it will
change the code generation, which is getting better. Though gccgo
already produces very efficient code, much faster execution than the
main Go system.

-- 
Russel.
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