Transactions Per Second (TPS)

Key points

• TPS, short for transactions per second, measures how many transactions a network can process in one second.
• It is a common benchmark for comparing the capacity and scalability of different blockchains.
• The announced theoretical number does not always match the network's actual performance in everyday use.

What is TPS?

TPS stands for transactions per second, a measure of processing capacity. Applied to blockchains, it indicates how many transactions a network can confirm each second. It is one of the most cited figures when comparing different networks, because it helps give a sense of how much volume each one can handle before becoming congested.

How it works

A network's capacity depends on how it is built. Factors such as block size, how often blocks are produced, and the consensus mechanism influence how many transactions fit into each time interval. Networks designed for high speed prioritize a higher TPS; others prioritize decentralization and security, which often means a lower TPS.

This trade-off is a well-known tension. Increasing TPS usually requires concessions elsewhere, such as spreading validation across fewer participants or raising the requirements to run a node. Because of this, comparing networks by TPS alone can be misleading: a high number may come with more centralization, while a low number may reflect a choice favoring greater security and openness.

There is also the gap between the theoretical and the actual. The maximum TPS announced is usually measured under ideal conditions, which rarely repeat in everyday use. Actual performance depends on the type of transaction, the state of the network, and demand at the time. Layer-2 solutions emerged precisely to expand capacity without overloading the main network, processing transactions separately and recording the result on the base layer.

For this reason, TPS is useful as a reference, but it needs to be read together with the context of each network.

Why it matters

Understanding TPS helps in interpreting comparisons between networks and in understanding why some become congested and expensive during periods of high demand. For a company choosing where to operate, network capacity is a practical factor. This is a technical concept, and it does not represent any operating recommendation.

Risks and limitations

The announced maximum TPS is usually theoretical and rarely reflects actual performance under heavy demand. Comparing networks by this number alone ignores the trade-offs made in security and decentralization to achieve it. In addition, layer-2 solutions change the equation, making effective capacity harder to summarize in a single value. </content>