Apidays Helsinki 2024 - Sustainable IT and API Performance - How to Bring Them Together by Merja Kajava, Aavista Oy

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Aavista Oy Merja Kajava APIDays Helsinki & North 2024 Sustainable IT and API Performance - How to Bring Them Together

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Washington Post March 7, 2024 Goldman Sachs May 14, 2024

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Demand for electricity in North America has doubled 9-year growth forecast of demand for new electricity, in gigawatt hours

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Source: IEA (2024), Electricity 2024, IEA, Paris https://www.iea.org/reports/electricity-2024 “Electricity consumption from data centres, AI and the cryptocurrency sector could double by 2026” Data centres +29 TWh Increase Estimated drivers of change in electricity demand in the EU, 2021-2026

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0,3 2,9 Google search ChatGPT request Energy consumption (Wh) ~10x Source: Alex de Vries (2023).The growing energy footprint of artificial intelligence. Joule, Volume 7, Issue 10, 2023 https://doi.org/10.1016/j.joule.2023.09.004 Substantial differences in energy consumption for search APIs

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Source: Aavista City Countries with largest response times Differences in performance by API providers for the same API

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The elements of API performance Scalability Performance Response times Request and/or response sizes Backend “efficiency” Network latency Throughput

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API performance is shared between the API provider and the API consumer API Provider API Consumer Payload size Frequency

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API Performance – The API Consumer API Provider API Consumer How many API requests ? What is the request size ? What is the response size ? Is paging used ? Is caching applied ?

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API Performance – The Network API Provider API Consumer What is the network capacity ? What is the latency ? End-user

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API Performance – The API Provider API Provider API Consumer 3rd Party API How many API requests to private APIs ? How many API requests to 3rd party APIs ? Is caching applied ?

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API Performance – The Scalability API Provider API Consumer How many API consumers ? How many concurrent requests ? What is the frequency of the requests ?

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API backend efficiency is built from the design Architecture API design Technology choices Calls to other APIs

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SPECIFY PERFORMANCE REQUIREMENTS TEST PERFORMANCE MONITOR PERFORMANCE ADJUST Monitoring the API performance is an on-going activity

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What about the carbon footprint for APIs

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Carbon footprint calculators as part of the cloud billing Google Cloud - Carbon Footprint AWS - Customer Carbon Footprint Tool Note the scopes Scope 1 Scope 2 Scope 3

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Carbon footprint calculators for multi-cloud environments Cloud Carbon Footprint https://www.cloudcarbonfootprint.org Azure AWS Google Cloud