FoundationDB Julia Client
The current implementation covers all of the C-APIs, and provides an easy to use Julia API layer over it for simple key-value pairs.
The Julia APIs are quite easy to follow, with this example:
using FoundationDB open(FDBCluster()) do cluster # Read cluster configuration open(FDBDatabase(cluster)) do db # Open the database key = UInt8[0,1,2] # This is a key, and ... val = UInt8[9, 9, 9] # this is a value. Both are byte arrays. open(FDBTransaction(db)) do tran # Start a transaction @test clearkey(tran, key) == nothing # Delete a key if present @test getval(tran, key) == nothing # Get value for a key (nothing if not present) @test setval(tran, key, val) == nothing # Set value for a key @test getval(tran, key) == val # We get the value, once it has been set @test commit(tran) # Commit changes we made in our snapshot @test_throws FDBError commit(tran) # We can only commit once. end open(FDBTransaction(db)) do tran # Open a new transaction @test clearkey(tran, key) == nothing # Delete a key @test getval(tran, key) == nothing end # Transactions are auto-committed by default! # And also retried automatically when possible open(FDBTransaction(db)) do tran # Need a transaction even for read operation @test getval(tran, key) == nothing end # Reads don't have to be committed end end
Note: The Julia implementation makes use of Julia threading APIs. Make sure you have enabled threading and have at least two threads configured for Julia. E.g.:
$> JULIA_NUM_THREADS=2 $> export JULIA_NUM_THREADS $> julia -e 'using Pkg; Pkg.test("FoundationDB")'