[whatwg] How long should sessionStorage data persist?

[Jonas Sicking]

On Wed, Jun 3, 2009 at 12:31 AM, Ian Hickson <ian at hixie.ch> wrote:
> On Sat, 4 Apr 2009, João Eiras wrote:
>>
>> On , Jeremy Orlow <jorlow at google.com> wrote:
>>
>> > I think this also applies: "NOTE: The lifetime of a browsing context
>> > can be unrelated to the lifetime of the actual user agent process
>> > itself, as the user agent may support resuming sessions after a
>> > restart."
>>
>> Should that restore sessionStorage data ? Aren't you making
>> sessionStorage much more complicated while the same use cases are
>> covered by localStorage ? sessionStorage could be optimized to be just a
>> volatile amount of data in memory, but these requirements require
>> sessionStorage to implement the same disk IO heuristics, and a complex
>> heuristic to decide when to erase sessionStorage completly.
>>
>> I vote for the data to be present just while a page is open or is
>> restored from history or by going back.
>
> User agents aren't required to do the above; but they are allowed to if
> they so desire. So the complexity is entirely optional (and I don't expect
> most UAs to avail themselves of this option).

For the record, I think Firefox does this already.

/ Jonas