I have web product (third party) that’s built, establishes growth of approx 100k users and all have authenticated their twitter account. But the twitter is limited me to 350 req/h.
Is there a way to apply for a higher limit for API calls, or what will be the best solution to this issue?
The rates have changed since this question was posted. In OAuth v1.1 the rate limits are measured per 15 mins. Depending what you are calling the limits are 15, 30, 180 (for user_timeline which is what most people want) and 300 per 15 min chunk.
See this table for the limits
You can find how many of each call you have left and when the limit is reset by using application/rate_limit_status.
