Mark,

I am experimenting with local storage over here 
<http://tiddlywiki.psat.com.au/tiddlywiki5.1.20PreRelease.html?param#>. 
Anyone can use this as a platform to test Local storage and play with the 
pre-release as at 2019-02-20 so have a look.

I have no doubt it will have a number of great use cases. 

   - One is simply permitting trivial search and settings the visitor uses 
   to be saved for your return
      - In this case it is trivial if the settings are lost on return
      - Local storage saved Pallets, themes, toolbar settings etc... make 
      the experience much better.
   - Remember it only saves the changes from the loaded version so it needs 
   only the space required to store these changes
      - Imagine if I had a "Home Loan Calculator", the user details are 
      small in volume.
      - The Result of the computation could be printed so the result is 
      captured by the user, 
      - If the local storage goes (by my calculation very unlikely) they 
      can enter it again (if you do not promise they will not expect it)
   - At any time the user can save the wiki in totality - they are in 
   charge of their own risk aversion.

Issues Encountered

   - If I export an updated wiki to file, then upload and replace the 
   online copy with those changes, when I return to the URL it is still 
   showing the local storage items which are now redundant
      - I need to find a way to purge these
      - I Found a Way to purge this 
   - It is all good showing there are unsaved changes, but this would be 
   unnecessarily confusing to casual users. I have thus hidden this in the 
   DOcument Info tiddler.

Regards
Tony

On Sunday, 10 February 2019 06:04:50 UTC+11, Mark S. wrote:
>
> Actually I'm puzzled what the use case might be. If you can't trust your 
> data in it for long, and if there is no synchronization, then what are the 
> use cases? Mostly I could see it in an environment where every other save 
> technique is disallowed and where you don't mind if the data could be 
> exposed. Perhaps a system where your only connection to the outside world 
> is via email. Perhaps a mechanism for using TW for collating and processing 
> information, that then gets copied and pasted elsewhere. What else .... 
> although your data isn't secure, if you've ever rifled through your FF 
> profile for information (like I did with NoteSelf), it's definitely 
> obscure. Obscure may be good enough when all you want is to not leave a 
> trail of files behind.
>
> Other ideas?
>
> -- Mark
>
> There's another product, Laverna, that uses local and/or indexed storage 
> as well. They tout that they have an emphasis on privacy, because your data 
> isn't on the web. 
>
> On Friday, February 8, 2019 at 6:11:17 AM UTC-8, @TiddlyTweeter wrote:
>>
>> PMario wrote:
>>>
>>> Some more info about the storage limits 
>>> <https://developer.mozilla.org/en-US/docs/Web/API/IndexedDB_API/Browser_storage_limits_and_eviction_criteria>.
>>>  
>>> If you take your time an read this stuff, you'll see that the behaviour is 
>>> completely unpredictable. 
>>>
>>> And in my opinion way to fragile for our usecases. ... 
>>>
>>
>> I agree.
>>
>> I think there are a limited set of use cases where it could work 
>> usefully. But for longer-term saving of a wiki it is not a good strategy  
>> IMO.
>>
>> FYI, when NoteSelf first appeared I looked into it and found 
>> understanding browser storage very difficult. NoteSelf is a really great 
>> tool, but I'd never use it without a CouchDB remote database its constantly 
>> syncing with.
>>
>> My two cents
>> Josiah
>>
>

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