--- title: EP222: What is Google’s TPU? | daily.dev description: A newsletter roundup covering system design topics: an explainer on Google's TPU chips including the newly unveiled 8th-generation TPU 8t (training) and TPU 8i... canonical: https://daily.dev/posts/ep222-what-is-google-s-tpu--glkqvmct1 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: EP222: What is Google’s TPU? | daily.dev og:description: A newsletter roundup covering system design topics: an explainer on Google's TPU chips including the newly unveiled 8th-generation TPU 8t (training) and TPU 8i... og:url: https://daily.dev/posts/ep222-what-is-google-s-tpu--glkqvmct1 og:image: https://api.daily.dev/og/posts/GLkqvMCT1.png og:image:alt: EP222: What is Google’s TPU? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # EP222: What is Google’s TPU? **[ByteByteGo](https://daily.dev/sources/bytebytego)** · 5 min read · 2 upvotes · 0 comments ## Summary A newsletter roundup covering system design topics: an explainer on Google's TPU chips including the newly unveiled 8th-generation TPU 8t (training) and TPU 8i (inference) variants announced at Cloud Next '26, a rundown of 9 common types of API testing (smoke, functional, contract, integration, regression, load, stress, security, fuzz), common AI agent production guardrail layers, and a breakdown of forward proxy vs reverse proxy vs API gateway differences. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### What is the difference between Google's TPU 8t and TPU 8i chips? TPU 8t and TPU 8i are the two flavors of Google's 8th generation Tensor Processing Unit, unveiled at Cloud Next '26. TPU 8t is built for training workloads where raw throughput matters most, while TPU 8i is built for inference where latency and chip-to-chip speed are the priority. Both share the same Axion CPUs, liquid cooling, and software stack, so code written for one runs on the other. _Engineers tracking AI infrastructure shifts like this follow chip and model updates on daily.dev._ ### What are the main types of API testing I should implement? Nine common API test types cover different failure modes: smoke tests confirm critical endpoints respond after deploy, functional testing checks business logic correctness, contract testing protects agreements between services, integration testing covers full cross-system workflows, regression testing guards existing behavior, load and stress testing check traffic limits, security testing covers auth and input handling, and fuzz testing sends invalid inputs to surface hidden bugs. _Teams deciding which API tests to prioritize can track testing best practices on daily.dev._ ### What is the difference between a forward proxy, reverse proxy, and API gateway? A forward proxy sits next to the client and hides the client's identity from the destination, commonly used by corporate networks for policy enforcement and caching. A reverse proxy sits next to the server, terminating TLS and hiding backend machines, often via NGINX or HAProxy. An API gateway is a reverse proxy that adds auth, rate limiting, API keys, versioning, and request shaping so microservices don't each implement their own. _Developers deciding how to structure their networking layer can dig into proxy versus gateway tradeoffs on daily.dev._ ## Similar posts on daily.dev - [Google New TPU Generation is Specifically Designed for Agents and SOTA Model Training](https://daily.dev/posts/google-new-tpu-generation-is-specifically-designed-for-agents-and-sota-model-training-aznf1vfqp) · InfoQ · 0 upvotes · 0 comments - [Our eighth generation TPUs: two chips for the agentic era](https://daily.dev/posts/our-eighth-generation-tpus-two-chips-for-the-agentic-era-0d0ehgeeq) · Hacker News · 0 upvotes · 0 comments - [TPU 8t and TPU 8i technical deep dive](https://daily.dev/posts/tpu-8t-and-tpu-8i-technical-deep-dive-u5h1xk1ga) · Google Cloud · 0 upvotes · 0 comments - [Google splits its TPU line in two for the agentic era](https://daily.dev/posts/google-splits-its-tpu-line-in-two-for-the-agentic-era-zbjc2yyc7) · The New Stack · 0 upvotes · 0 comments --- Tags: [#career](https://daily.dev/tags/career), [#testing](https://daily.dev/tags/testing), [#ai-agents](https://daily.dev/tags/ai-agents) [View this post on daily.dev](https://daily.dev/posts/ep222-what-is-google-s-tpu--glkqvmct1) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"EP222: What is Google’s TPU?","url":"https://daily.dev/posts/ep222-what-is-google-s-tpu--glkqvmct1","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/ep222-what-is-google-s-tpu--glkqvmct1"},"datePublished":"2026-08-15T15:37:07.808Z","dateModified":"2026-09-14T09:32:37.962Z","description":"A newsletter roundup covering system design topics: an explainer on Google's TPU chips including the newly unveiled 8th-generation TPU 8t (training) and TPU 8i...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/8d67e1e5800beb2ff1984061f475d0c9?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/8d67e1e5800beb2ff1984061f475d0c9?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"ByteByteGo","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"ByteByteGo","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/35be29234ee14d01a9cd049c52e12753","url":"https://daily.dev/sources/bytebytego"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/ep222-what-is-google-s-tpu--glkqvmct1","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":2},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"career,testing,ai-agents","timeRequired":"PT5M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"ByteByteGo","item":"https://daily.dev/sources/bytebytego"},{"@type":"ListItem","position":3,"name":"EP222: What is Google’s TPU?"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/ep222-what-is-google-s-tpu--glkqvmct1#faq","mainEntity":[{"@type":"Question","name":"What is the difference between Google's TPU 8t and TPU 8i chips?","acceptedAnswer":{"@type":"Answer","text":"TPU 8t and TPU 8i are the two flavors of Google's 8th generation Tensor Processing Unit, unveiled at Cloud Next '26. TPU 8t is built for training workloads where raw throughput matters most, while TPU 8i is built for inference where latency and chip-to-chip speed are the priority. Both share the same Axion CPUs, liquid cooling, and software stack, so code written for one runs on the other. Engineers tracking AI infrastructure shifts like this follow chip and model updates on daily.dev."}},{"@type":"Question","name":"What are the main types of API testing I should implement?","acceptedAnswer":{"@type":"Answer","text":"Nine common API test types cover different failure modes: smoke tests confirm critical endpoints respond after deploy, functional testing checks business logic correctness, contract testing protects agreements between services, integration testing covers full cross-system workflows, regression testing guards existing behavior, load and stress testing check traffic limits, security testing covers auth and input handling, and fuzz testing sends invalid inputs to surface hidden bugs. Teams deciding which API tests to prioritize can track testing best practices on daily.dev."}},{"@type":"Question","name":"What is the difference between a forward proxy, reverse proxy, and API gateway?","acceptedAnswer":{"@type":"Answer","text":"A forward proxy sits next to the client and hides the client's identity from the destination, commonly used by corporate networks for policy enforcement and caching. A reverse proxy sits next to the server, terminating TLS and hiding backend machines, often via NGINX or HAProxy. An API gateway is a reverse proxy that adds auth, rate limiting, API keys, versioning, and request shaping so microservices don't each implement their own. Developers deciding how to structure their networking layer can dig into proxy versus gateway tradeoffs on daily.dev."}}]} ```