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Imagine I have two instances, and I delete both of them after using a certain amount of traffic. Then I create two new instances. Now, how much will my data transfer be?
Hi,
To better understand the how Lightsail data transfer is calculated, please refer to Lightsail FAQs: How does my data transfer allowance work for instances.
To answer your question on
Imagine I have two instances, and I delete both of them after using a certain amount of traffic. Then I create two new instances. Now, how much will my data transfer be?
Based on example 5 of the FAQs, The amount of data transfer left for newly created instances will be the total DT allowed subtract the amount of DT used by the instances you deleted. Noticed that deleting instances and creating new ones does not reset your data transfer usage or allowance for the month. The usage is tied to your account and bundle type.
To avoid being charged for additional data transfer beyond your allocated allowance, you can consider the following options:
Keep track of the data transfer usage for your instances to ensure that you do not exceed the allocated allowance. https://docs.aws.amazon.com/lightsail/latest/userguide/amazon-lightsail-resource-health-metrics.html
Implement measures to optimize data transfer usage, such as caching static content, compressing data, or offloading data to content delivery networks (CDNs) where possible. If you find that your current data transfer allowance is insufficient for your needs, you can consider upgrading your Lightsail plan to one that offers a higher data transfer allowance.
This might helps too :- https://docs.aws.amazon.com/lightsail/latest/userguide/amazon-lightsail-frequently-asked-questions-faq.html
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I will simplify your question example to one instance created, used some data transfer and deleted and then another new instance created.
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The data transfer allowance is allocated by the bundle or Lightsail instance plan type. If the bundle of the older and newly created instance is the same (e.g. both are the 512MB Memory, 1TB DataTransfer ones) then the data transfer used by the deleted instance counts towards the allowance available to the newer instance. If the older instance used half of the 1TB, only half TB is left for the new instance before it starts accruing overage charges.