eventhub throughput unit

sakuraime 2,321

Suppose I am having a Eventhub with standard tier and setting throughput unit to 2 .
so how fast it can accept message ???? message / s ??

"Maximum size of eventhubs event" mean single event is 1MB ? And the speed will be faster if the message size is less than 1MB ?

HarithaMaddi-MSFT 10,136 Reputation points

2021-01-27T06:26:36.193+00:00

Hi @sakuraime ,

Please suggest if below suggested details are helpful. Otherwise, let us know and we will continue to engage with you on the query.

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HarithaMaddi-MSFT 10,136 Reputation points

2021-01-28T05:35:35.293+00:00

Hi @sakuraime ,

We have not heard back from you. Following up to check if below suggested details are helpful. Otherwise, let us know and we will continue to engage with you on the query.

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1 answer

Ivan Wilson 121 Reputation points

2021-01-21T03:22:19.033+00:00

There are two limits, you need to keep below both.

For 1 throughput unit, you can submit 1,000 messages a second as long as the amount of data is less than 1 MB. That means an average message size below 1 KB.

If your data load is going to be more than 1 KB (on average) then that will reduce the number of messages you can process per second.

You scale up by adding more Throughput Units. I have seen documentation that you can scale up to 40 throughput units under the standard plan. You can also request more throughput units, but I presume that may or may not be approved.

There are some scenarios where the max message size you can send to the Event Hub is 200 KB. However, you can send five of these per second for each throughput unit to reach your 1 MB per second threshold.
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2 people found this answer helpful.
sakuraime 2,321 Reputation points

2021-01-21T05:43:04.943+00:00

hi thanks.
I have a json file which is 1KB in size.
which means for 1 TU , 1000 of these json can be sent to Eventhub ?

Ivan Wilson 121 Reputation points

2021-01-21T09:47:50.997+00:00

That's correct

HarithaMaddi-MSFT 10,136 Reputation points

2021-01-21T11:26:23.413+00:00

@sakuraime - Please accept the answer from @Ivan Wilson if it is helpful. Let us know for further queries and we will be glad to assist.

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HarithaMaddi-MSFT 10,136 Reputation points

2021-01-25T07:20:31.65+00:00

Hi @sakuraime ,

We have not received a response from you. Please suggest if above suggested approach is helpful. Otherwise, let us know and we will continue to engage with you on the query.

Please do consider to click on "Accept Answer" and "Up-vote" on the post that helps you, as it can be beneficial to other community members.

sakuraime 2,321 Reputation points

2021-01-25T08:22:45.033+00:00

may I know if my eventhub has 4TU , and it's charged $ eventhough there are no events ???

Ivan Wilson 121 Reputation points

2021-01-26T00:37:44.037+00:00

Throughput units are charged per hour of usage. If a throughput unit is not used during an hour, then there is no charge.

Serkant Karaca 21 Reputation points Microsoft Employee

2021-01-26T04:36:10.983+00:00

Actually TU is charged regardless of usage.

Ivan Wilson 121 Reputation points

2021-01-26T06:11:35.54+00:00

That is interesting. I've taken another look at the pricing page for event hubs and I can see where I went wrong. Pricing is shown as "per hour" and there is a footnote that "monthly price estimates are based on 730 hours of usage". I incorrectly interpreted this to mean that billing is based on usage.

However that does clear up my confusion on how the auto-inflate setting impacts billing. Auto-inflate would allow us to start with a low number of throughput units but scale up to our maximum number if the load required. The only downside being that there is no inbuilt mechanism to auto-deflate when the load drops again.

sakuraime 2,321 Reputation points

2021-01-26T07:12:20.513+00:00

I get a bit confuse, as there are 3 type of charging in the above graph .

if the eventhub start 1 hours without event will charge 0.233 HK$ / hour ??
so if there are events within that hours say 1 million , will charge 0.233 + 0.218 ???

PER 1 through put unit ?

Serkant Karaca 21 Reputation points Microsoft Employee

2021-01-26T22:22:58.697+00:00

Correct. You will be charged for hourly TU setting + usage in that hour.

sakuraime 2,321 Reputation points

2021-01-27T01:48:19.607+00:00

thanks. and what about CAPTURE ?
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eventhub throughput unit

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