1.4.0

The release introduces an experimental storage_mode option for the utube and utubettl drivers with the memtx engine. It could be used to create a utube or utubettl queue with an additional buffer space that stores only ready to take tasks.

local tube = queue.create_tube('utube_with_ready_buffer', 'utube',
    {storage_mode = queue.driver.utube.STORAGE_MODE_READY_BUFFER})

local tube = queue.create_tube('utubettl_with_ready_buffer', 'utubettl',
    {storage_mode = queue.driver.utubettl.STORAGE_MODE_READY_BUFFER})

The storage mode slower in general cases, but a much faster in cases when you have utubes with many tasks (see README.md for the performance comparison). So you should make your choice carefully.

Added

• Experimental storage_mode option for creating a utube and utubettl tube (#228). It enables the workaround for slow takes while working with busy tubes.

Fixed

• Stuck in INIT state if an instance failed to enter the running mode in time (#226). This fix works only for Tarantool versions >= 2.10.0.
• Slow takes on busy utube and utubettl tubes (#228). The workaround could be enabled by passing the storage_mode = "ready_buffer" option while creating the tube.