<p>Are there any ways to avoid limitation for api calls (5/sec)?</p>

<p>I need the info about <em>transactions</em> and <em>balance</em> (of certain account), <em>UTXOs</em> and the ability to broadcast my transaction.</p>

<p>Currently I am using public blockchain explorers such as </p>

<p><a href="https://www.blockcypher.com/" rel="nofollow noreferrer">https://www.blockcypher.com/</a></p>

<p><a href="https://chain.so/" rel="nofollow noreferrer">https://chain.so/</a></p>

<p><a href="https://etherscan.io" rel="nofollow noreferrer">https://etherscan.io</a></p>

<p>However they have limits on their calls, which is unacceptable for cases if my service in use of at least 1000-2000 people.</p>

<p>I am begginer, so after some surfing I understood that the only way to tackle that issue is by saving the info in my own database or run my own full nodes (for each currency I have - eth/etc/bitcoin/btc/doge/dash.. etc)
which might be pretty expensive and time-consuming.</p>

<p>Can you suggest any good solution?</p>

<p>Thank you!</p>

CC BY-SA 4.0
2019-03-19T08:52:00.473Z
Looks like you've already found the solution, which is to run your own nodes. Free services have API limits for a reason, and bypassing them is likely against the terms of service. Moreover, you should not be relying on a third party to confirm such things - if they lie to you, you have little recourse against false balances and withdrawals.
Raghav Sood
CC BY-SA 4.0
2019-03-19T10:45:37.013Z
@RaghavSood seems like cashing data about my transactions in my own database (mapping account_address => array of transactions) would be much faster
Even if I had my own node, it would take a lot of time to scan all blocks and receive the info I need, Idk how it is implemented in etherscan or chain.so but seems like they use special data structures etc (since I didnt find the method in JSON RPC to receive transactions by address)
newbie
CC BY-SA 4.0
2019-03-19T10:49:48.207Z
All the APIs you mention essentially extract all the information block by block into separate DBs and query it - You can check the source for open source explorers such as Insight to get an idea of how they are structured.
Raghav Sood
<blockchain><bitcoind><ethereum><full-node>
api limit workaround
newbie
# api limit workaround

(Asked by: username_0 on 2019-03-19)

Are there any ways to avoid limitation for api calls (5/sec)?

I need the info about *transactions* and *balance* (of certain account), *UTXOs* and the ability to broadcast my transaction.

Currently I am using public blockchain explorers such as

<https://www.blockcypher.com/>

<https://chain.so/>

<https://etherscan.io>

However they have limits on their calls, which is unacceptable for cases if my service in use of at least 1000-2000 people.

I am begginer, so after some surfing I understood that the only way to tackle that issue is by saving the info in my own database or run my own full nodes (for each currency I have - eth/etc/bitcoin/btc/doge/dash.. etc)
which might be pretty expensive and time-consuming.

Can you suggest any good solution?

Thank you!

**Tags:** blockchain, bitcoind, ethereum, full-node

> **Comments:**
> **username_1**: Looks like you've already found the solution, which is to run your own nodes. Free services have API limits for a reason, and bypassing them is likely against the terms of service. Moreover, you should not be relying on a third party to confirm such things - if they lie to you, you have little recourse against false balances and withdrawals.  
> **username_0**: @username_1 seems like cashing data about my transactions in my own database (mapping account_address => array of transactions) would be much faster Even if I had my own node, it would take a lot of time to scan all blocks and receive the info I need, Idk how it is implemented in etherscan or chain.so but seems like they use special data structures etc (since I didnt find the method in JSON RPC to receive transactions by address)  
> **username_1**: All the APIs you mention essentially extract all the information block by block into separate DBs and query it - You can check the source for open source explorers such as Insight to get an idea of how they are structured.  

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## 0 answers

