http://www.w3.org/Bugs/Public/show_bug.cgi?id=10357

           Summary: [IndexedDB] Remove the SNAPSHOT_READ transaction mode
           Product: WebAppsWG
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Indexed Database API
        AssignedTo: [email protected]
        ReportedBy: [email protected]
         QAContact: [email protected]
                CC: [email protected], [email protected]


We currently have two read-only transaction modes, READ_ONLY and SNAPSHOT_READ,
that are identical in every aspect (point-in-time consistency for readers,
allow multiple concurrent readers, etc.), except that they have different
concurrency characteristics, with READ_ONLY blocking writers and SNAPSHOT_READ
allowing concurrent writers come and go while readers are active. 

We agreed (see [1]) that we could remove the concept and only have READ_ONLY,
leaving it up to the implementation whether writers block readers or readers
are allowed and some mechanism is used to maintain point-in-time consistency
semantics.

[1] http://lists.w3.org/Archives/Public/public-webapps/2010JulSep/0485.html

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