How a Limit Order Rests on the Order Book and Gets Filled
A limit order is an instruction to buy or sell at a specific price or better. It does not execute immediately unless the market happens to be trading at that price. Instead, the order goes into a queue on the order book. That queue is sorted by price first, then by time.
The order book is a list of resting offers. On one side sit bids - buy orders. On the other sits asks - sell orders. Each side is ranked. The highest bid is at the top of the buy side. The lowest ask is at the top of the sell side. Within a price level, orders are arranged by arrival time. First in, first served.
Munchcoin is a Solana-based token trading under the symbol MUNCHKIN, with the official name Scottish Highland Cow. It launched on July 18, 2026. As of August 31, 2026, its onchain data shows a price of $0.000002369, liquidity of $4,185.70, a fully diluted valuation of $2,366, and a 24-hour volume of $3.13. There were 1 transaction in the previous 24 hours. The token is listed on 19 pairs. Liquidity is thin. The project is not dead but activity is low.
When you place a buy limit order at a price below the current best ask, it joins the bid side. If the price is above the best bid, it becomes the new best bid. Either way, the order rests. It sits there until the matching engine decides to touch it. That only happens when a market order or a marketable limit order arrives on the opposite side.
A market order says "execute now at whatever the best available price is." A marketable limit order is a limit order that, because of its price, can immediately cross the spread. When one of these comes in for the sell side, the matching engine scans the bid queue. It takes the highest-priced resting orders first. If multiple bids share the same price, the engine picks the one that arrived earliest.
The same logic applies in reverse. A market buy order or a marketable buy limit order will fill against the ask queue. Lowest price first. At the same price, oldest order first.
Being first at a price level matters. If you are the first person to place a limit order at a given price, your order sits at the front of that level's queue. When a matching order arrives, yours gets filled first. Later arrivals at the same price must wait. Only after your order is fully consumed does the next one get touched. This time priority rewards patience.
Partial fills are normal. A large market order might not take your entire resting limit order. It might take 500 tokens worth and leave 200 still on the book. The remainder stays exactly where it was. It keeps its original timestamp. It remains at the front of that price level's queue, assuming no other orders at that price were ahead of it. The matching engine does not reset or reshuffle after a partial fill. That remainder continues to rest, waiting for the next inbound order.
The order book is not static. As market conditions change, limit orders get canceled, replaced, or pushed down by newer orders at better prices. Time priority only holds within a given price level. If someone places a bid one tick higher than yours, their order becomes the new best bid. Your order drops to second place. The queue at the old price level remains intact, but your order is no longer the best available.
On Solana, with fast block times, the queue mechanics work the same but at higher speed. The matching engine on PumpSwap, where Munchcoin trades, processes orders in real time. Resting orders can be filled or partially filled within seconds if the market moves. With Munchcoin's thin liquidity - only $4,185.70 as of August 31 - a modest market order can move through multiple price levels quickly. A small buy order might sweep the entire ask side, filling several resting sell orders one by one.
A limit order that never gets filled will eventually be canceled by its owner. It does not expire unless you set a time-in-force condition like "Immediate-or-Cancel" or "Good-Til-Date." Most retail traders use "Good-Til-Canceled," meaning the order rests indefinitely until filled or manually removed. On a token with low volume like Munchcoin, a limit order could sit for hours or days. The matching engine does not care about the wait. It only cares about price and time.
Understanding how a limit order rests and gets filled is essential for anyone who wants to avoid paying the spread or who wants to be the one earning it. There is no guarantee of execution. But when execution comes, the rules are mechanical. Price first. Time second. The engine does not prioritize size, relationship, or any other factor. Only price and time.
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