3 ms·
Because running a trading algorithm on a non-idempotent stack is such a good idea.
by sorincos 12y ago
Because running a trading algorithm on a non-idempotent stack is such a good idea.
- jjHey 12y agoVery good remark! Storm by default implements at-least-once semantics. If a bolt process executed an event and failed right away without acknowledging, an execution would get replayed (so you would buy/sell twice). However, there's a remedy! By sacrifacing latency you can have exactly-once-semantics, see Trident, Summingbird.