How order limit working

API Spot/Margin API
1

I see this rateLimitType from /api/v3/exchangeInfo:

{
  "rateLimitType": "ORDERS",
  "interval": "SECOND",
   "intervalNum": 10,
  "limit": 100
},
{
  "rateLimitType": "ORDERS",
  "interval": "DAY",
  "intervalNum": 1,
   "limit": 200000
}

What does it really mean? How can I measure my usage?

2

these 2 limitations from our /api/v3/exchangeInfo give clear information about how many orders you can send by API in certain time.

It has 2 level measurements. Firstly you can place 100 orders for each 10 seconds. Then it also measure that you can place 200,000 order in 24 hours (one day). Futures endpoint has similar but different limit interval and value.

To help clients understanding their current usage,
X-MBX-USED-WEIGHT-10S
X-MBX-USED-WEIGHT-1D
these 2 custom HTTP response headers for each http request can be used to identity order limit usage in real time.

For spot, these endpoints are consuming your order limit:

POST /api/v3/order
POST /api/v3/order/oco
POST /sapi/v1/margin/order

Cancel order DON’T use the order limit.