as shown in the figure, store.findRecord ("r1mp3). Then (res = > {}) , store.findRecord (" r2jewelry 5). Then (res = > {}) , record3.save (). Then (res = > {}) ; All three will send http requests, but will be merged into one request, only one request, others say you can use the timer event loop to achieve, I have no idea, ask God for advice, give ideas.
