diff --git a/ChangeLog.md b/ChangeLog.md
new file mode 100644
--- /dev/null
+++ b/ChangeLog.md
@@ -0,0 +1,3 @@
+# Changelog for multipool-persistent-postgresql
+
+## Unreleased changes
diff --git a/LICENSE b/LICENSE
new file mode 100644
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright Ian Duncan (c) 2018
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Ian Duncan nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
new file mode 100644
--- /dev/null
+++ b/README.md
@@ -0,0 +1,1 @@
+# multipool-persistent-postgresql
diff --git a/Setup.hs b/Setup.hs
new file mode 100644
--- /dev/null
+++ b/Setup.hs
@@ -0,0 +1,2 @@
+import Distribution.Simple
+main = defaultMain
diff --git a/multipool-persistent-postgresql.cabal b/multipool-persistent-postgresql.cabal
new file mode 100644
--- /dev/null
+++ b/multipool-persistent-postgresql.cabal
@@ -0,0 +1,68 @@
+-- This file has been generated from package.yaml by hpack version 0.28.2.
+--
+-- see: https://github.com/sol/hpack
+--
+-- hash: 2b2ee99431ace4a6256156fe6335848b4ce04856b60c4fb1e4d61cde709eace0
+
+name:           multipool-persistent-postgresql
+version:        0.1.0.0
+synopsis:       Read and write appropriately from both master and replicated postgresql instances.
+description:    Please see the README on GitHub at <https://github.com/iand675/multipool-persistent-postgresql#readme>
+homepage:       https://github.com/iand675/multipool-persistent-postgresql#readme
+bug-reports:    https://github.com/iand675/multipool-persistent-postgresql/issues
+author:         Ian Duncan
+maintainer:     ian@iankduncan.com
+copyright:      Ian Duncan
+license:        BSD3
+license-file:   LICENSE
+build-type:     Simple
+cabal-version:  >= 1.10
+extra-source-files:
+    ChangeLog.md
+    README.md
+
+source-repository head
+  type: git
+  location: https://github.com/iand675/multipool-persistent-postgresql
+
+library
+  exposed-modules:
+      Data.MultiPool.Persist.Postgresql
+  other-modules:
+      Paths_multipool_persistent_postgresql
+  hs-source-dirs:
+      src
+  build-depends:
+      base >=4.7 && <5
+    , monad-logger
+    , mtl
+    , multipool
+    , multipool-persistent
+    , persistent
+    , persistent-postgresql
+    , postgresql-common-persistent
+    , unliftio-core
+    , unordered-containers
+  default-language: Haskell2010
+
+test-suite multipool-persistent-postgresql-test
+  type: exitcode-stdio-1.0
+  main-is: Spec.hs
+  other-modules:
+      Paths_multipool_persistent_postgresql
+  hs-source-dirs:
+      test
+  ghc-options: -threaded -rtsopts -with-rtsopts=-N
+  build-depends:
+      base >=4.7 && <5
+    , monad-logger
+    , mtl
+    , multipool
+    , multipool-persistent
+    , multipool-persistent-postgresql
+    , persistent
+    , persistent-postgresql
+    , postgresql-common-persistent
+    , unliftio-core
+    , unordered-containers
+  default-language: Haskell2010
diff --git a/src/Data/MultiPool/Persist/Postgresql.hs b/src/Data/MultiPool/Persist/Postgresql.hs
new file mode 100644
--- /dev/null
+++ b/src/Data/MultiPool/Persist/Postgresql.hs
@@ -0,0 +1,71 @@
+{-# LANGUAGE QuasiQuotes #-}
+{-# LANGUAGE RecordWildCards #-}
+module Data.MultiPool.Persist.Postgresql
+    ( initMultiPool
+    , initMultiPool'
+    , runReadCurrent
+    , getLastLSN
+    , gatherLSNs
+    ) where
+import Control.Monad.IO.Unlift
+import Control.Monad.Logger
+import Control.Monad.Reader
+import Data.HashMap.Strict (HashMap)
+import qualified Data.HashMap.Strict as HM
+import Data.MultiPool
+import Data.MultiPool.Persist.Sql
+import Database.Persist.Postgresql
+import Database.Persist.Postgresql.Common
+
+initMultiPool ::
+     (MonadLogger m, MonadUnliftIO m)
+  => ConnectionString
+  -> Int
+  -> [(InstanceName SqlReadBackend, ConnectionString, Int)]
+  -> m (MultiPool SqlBackend)
+initMultiPool mc mn rl = do
+  rr <- roundRobin $ map (\(i, _, _) -> i) rl
+  initMultiPool' rr mc mn rl
+
+initMultiPool' ::
+     (MonadLogger m, MonadUnliftIO m)
+  => (MultiPool SqlBackend -> IO (Maybe (InstanceName SqlReadBackend))) -- Strategy for selectin the replica instance when calling 'runReadAny'. 'roundRobin' is the current default.
+  -> ConnectionString -- ^ Master connection string
+  -> Int -- ^ Max number of connections to master instance
+  -> [(InstanceName SqlReadBackend, ConnectionString, Int)] -- ^ Replica connection details
+  -> m (MultiPool SqlBackend)
+initMultiPool' multiPoolAnyReplicaSelector str n is = do
+  multiPoolMaster <- createPostgresqlPool str n
+  replicas <- mapM (\(inst, connStr, numConns) -> (,) <$> pure inst <*> createPostgresqlPool connStr numConns) is
+  let multiPoolReplica = HM.fromList replicas
+      multiPoolAnyMasterSelector = const $ pure ()
+  return $ MultiPool {..}
+
+-- | Performs a read on the first replica found that sufficiently up-to-date with the given LSN. This function can be combined with 'gatherLSNs' and some sort of caching mechanism to provide a simple way to scale out reads. An great article on this concept can be found [here](https://brandur.org/postgres-reads)
+--
+-- If no replica is up-to-date with the given LSN, the master instance will be used to run the query.
+runReadCurrent ::
+     MonadUnliftIO m
+  => MultiPool SqlBackend
+  -> HashMap (InstanceName SqlReadBackend) LSN
+  -> LSN
+  -> ReaderT SqlReadBackend m a
+  -> m a
+runReadCurrent b lsnMap lsn m =
+  case validLsnPools of
+    [] -> runReadAnyMaster b m
+    (pool:_) -> runSqlPool m $ snd pool
+  where
+    validLsnPools =
+      HM.toList $
+      HM.intersectionWith
+        (\pool _ -> pool)
+        (multiPoolReplica b)
+        (HM.filter (>= lsn) lsnMap)
+
+-- TODO 9.6 support?
+getLastLSN :: MonadIO m => ReaderT SqlReadBackend m LSN
+getLastLSN = (unSingle . head) <$> unsafeRead [sqlQQ|SELECT pg_last_wal_replay_lsn() AS lsn|]
+
+gatherLSNs :: MonadUnliftIO m => MultiPool SqlBackend -> m (HashMap (InstanceName SqlReadBackend) LSN)
+gatherLSNs p = fmap HM.fromList $ forReplicas p $ \ident pool -> runSqlPool ((,) <$> pure ident <*> getLastLSN) pool
diff --git a/test/Spec.hs b/test/Spec.hs
new file mode 100644
--- /dev/null
+++ b/test/Spec.hs
@@ -0,0 +1,2 @@
+main :: IO ()
+main = putStrLn "Test suite not yet implemented"