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e187bc2474
Haxl/changelog.md
Simon Marlow e187bc2474 Updates for GHC 8.4.x and 8.6.x (#97) 
Summary: And bump version to 2.0.1.1

Reviewed By: anubhav94N

Differential Revision: D10011092

fbshipit-source-id: 4d45f79fb4c89112d29d40f0d53a50441a443729
2018-09-24 14:20:57 -07:00

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Changes in version 2.0.1.1

  • Support for GHC 8.6.1
  • Bugfixes

Changes in version 2.0.1.0

  • Exported MemoVar from Haxl.Core.Memo
  • Updated the facebook example
  • Fixed some links in the documentation
  • Bump some version bounds

Changes in version 2.0.0.0

  • Completely rewritten internals to support arbitrarily overlapping I/O and computation. Haxl no longer runs batches of I/O in "rounds", waiting for all the I/O to complete before resuming the computation. In Haxl 2, we can spawn I/O that returns results in the background and computation fragments are resumed when the values they depend on are available. See tests/FullyAsyncTest.hs for an example.

  • A new PerformFetch constructor supports the new concurrency features: BackgroundFetch. The data source is expected to call putResult in the background on each BlockedFetch when its result is ready.

  • There is a generic DataSource implementation in Haxl.DataSource.ConcurrentIO for performing each I/O operation in a separate thread.

  • Lots of cleanup and refactoring of the APIs.

  • License changed from BSD+PATENTS to plain BSD3.

Changes in version 0.5.1.0

  • 'pAnd' and 'pOr' were added
  • 'asyncFetchAcquireRelease' was added
  • 'cacheResultWithShow' was exposed
  • GHC 8.2.1 compatibility

Changes in version 0.5.0.0

  • Rename 'Show1' to 'ShowP' (#62)

Changes in version 0.3.0.0

  • Some performance improvements, including avoiding quadratic slowdown with left-associated binds.

  • Documentation cleanup; Haxl.Core is the single entry point for the core and engine docs.

  • (>>) is now defined to be (*>), and therefore no longer forces sequencing. This can have surprising consequences if you are using Haxl with side-effecting data sources, so watch out!

  • New function withEnv, for running a sub-computation in a local Env

  • Add a higher-level memoization API, see 'memo'

  • Show is no longer required for keys in cachedComputation

  • Exceptions now have Eq instances