What is order book in stock market?

An order book in stock market lists all purchase and sell orders for different assets at various price levels, along with traders involved in the trade. It provides real-time market depth data to traders and financial analysts, allowing them to comprehend market movements and make informed trading decisions.

What is order metadata?

The order metadata includes pointers to the order book (essentially consisting of the price-levels on both sides) and price-level it belongs to, so after looking up the order, the order book and price level data structures are a single dereference away.

What is an efficient data structure to model order book?

What is an efficient data structure to model order book of prices and quantities to ensure: The specifics depend on if you're implementing for equities (order-based) or futures (level-based).

What is a limit order book?

A limit order book contains orders that a trader intends to buy or sell at a specific price based on their preferences and market condition. When the price hits the limit, the order gets executed automatically. This has been a guide to what is Order Book and its Meaning.