README.md

Map-reduce, который убивает

Опасности select

tarantool

box.cfg{memtx_memory = 2*1024*1024*1024}

clock = require'clock'
t = clock.time() box.space.test:select() t = clock.time() - t

Пагинация с офсетом

clock = require'clock'
t = clock.time()
for i = 0, 200 do
    box.space.test:pairs():drop_n(1000 * i):take_n(1000):totable()
end
t = clock.time() - t

t = 22s

t = clock.time()
last_key = nil
for i = 0, 200 do
    res = box.space.test:pairs(last_key, { iterator = 'GE' }):take_n(1000):totable()
    last_key = res[1000][0]
end
t = clock.time() - t

t = 0.1s