I'm starting up a new bitcoin based commerce site and am wondering how many transactions per second the bitcoin JSON-RPC API can accept? A user can have an account balance in bitcoin and I was initially thinking of storing all transactions in a database and then querying that to determine their account balance, but after reading up on blockchain reorgs and whatnot decided against it.

So is it feasible to just use the bitcoin API directly, or should I implement some sort of caching/load balancing?

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    If you're building a web-based wallet, you should look at the software that blockchain.info has open-sourced. github.com/blockchain
    – Nick ODell
    Apr 25, 2013 at 4:45
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    Thanks I'll take a look! Any reason why I shouldn't just use the standard client that you can think of? Apr 25, 2013 at 6:03
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    Is there something in particular that you are after which you could not work out yourself by running some benchmarking? Things like this are usually very hardware-dependent so any answer provided here is likely to be inaccurate for your own needs.
    – jgm
    Apr 25, 2013 at 7:51

1 Answer 1


Benchmark it and see, although be aware that bitcoind has never been optimized for handling thousands of accounts with hundreds of thousands of transactions. In particular, calls like 'getbalance' get slower the more transactions that are in the wallet.

Happily, there are now other implementations that claim to be better at handling lots of accounts/wallets/transactions.

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    Would you be able to point me in the direction of any of those implementations? Thanks! Apr 25, 2013 at 19:23

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