go.dev: add five new blog posts to solutions page

- Allegro
- Monzo
- SIXT
- Stream
- Trivago

Change-Id: Ife0ea0051cf9ed0357175fb21ed18b96cda918d8
Reviewed-on: https://go-review.googlesource.com/c/website/+/330729
Trust: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Steve Francia <spf@golang.org>
diff --git a/go.dev/_content/images/logos/allegro.png b/go.dev/_content/images/logos/allegro.png
new file mode 100644
index 0000000..20e7a55
--- /dev/null
+++ b/go.dev/_content/images/logos/allegro.png
Binary files differ
diff --git a/go.dev/_content/images/logos/monzo.png b/go.dev/_content/images/logos/monzo.png
new file mode 100644
index 0000000..4cb8226
--- /dev/null
+++ b/go.dev/_content/images/logos/monzo.png
Binary files differ
diff --git a/go.dev/_content/images/logos/sixt.png b/go.dev/_content/images/logos/sixt.png
new file mode 100644
index 0000000..1954496
--- /dev/null
+++ b/go.dev/_content/images/logos/sixt.png
Binary files differ
diff --git a/go.dev/_content/images/logos/stream.png b/go.dev/_content/images/logos/stream.png
new file mode 100644
index 0000000..a0abb5a
--- /dev/null
+++ b/go.dev/_content/images/logos/stream.png
Binary files differ
diff --git a/go.dev/_content/images/logos/trivago.png b/go.dev/_content/images/logos/trivago.png
new file mode 100644
index 0000000..50ef05a
--- /dev/null
+++ b/go.dev/_content/images/logos/trivago.png
Binary files differ
diff --git a/go.dev/_content/solutions/allegro.md b/go.dev/_content/solutions/allegro.md
new file mode 100644
index 0000000..e57a279
--- /dev/null
+++ b/go.dev/_content/solutions/allegro.md
@@ -0,0 +1,9 @@
+---
+linkTitle: Allegro – Writing a very fast cache service with millions of entries in Go
+description: “Finally, we sped up our application from more than 2.5 seconds to less than 250 milliseconds for the longest request.”
+layout: solution
+company: Allegro
+logoSrc: allegro.png
+series: Case Studies
+link: https://blog.allegro.tech/2016/03/writing-fast-cache-service-in-go.html
+---
diff --git a/go.dev/_content/solutions/monzo.md b/go.dev/_content/solutions/monzo.md
new file mode 100644
index 0000000..45cf22c
--- /dev/null
+++ b/go.dev/_content/solutions/monzo.md
@@ -0,0 +1,12 @@
+---
+linkTitle: Monzo – Building a Bank with Golang, Microservices and Containers
+description: “Go is a perfect language for creating microservice architectures,
+  and the concurrency features, and the language in general,
+  has allowed the easy creation of small and simple networked services
+  at Monzo that are focused around the ‘single responsibility principle’.”
+layout: solution
+company: Monzo
+logoSrc: monzo.png
+series: Case Studies
+link: https://www.infoq.com/news/2017/03/monzo-bank-golang/
+---
diff --git a/go.dev/_content/solutions/sixt.md b/go.dev/_content/solutions/sixt.md
new file mode 100644
index 0000000..6ff4389
--- /dev/null
+++ b/go.dev/_content/solutions/sixt.md
@@ -0,0 +1,9 @@
+---
+linkTitle: Find out more about Golang at SIXT
+description: “We have been doing Golang at SIXT since 2015. Back then there was not that many people here in our area which were doing Golang in production mode, mostly side projects. So it was really a bold move from our side but it proved to be quite successful. Fast forward to 2019 we have over 15 teams doing Golang. Many of the applications they have built are basically foundation for most of our mobility product offer including Rent, Ride and Share.”
+layout: solution
+company: SIXT
+logoSrc: sixt.png
+series: Case Studies
+link: https://www.facebook.com/sixtkarriere/posts/find-out-more-about-golang-at-sixt-to-become-a-godeveloper-mfd-at-sixt-click-her/2049632898495842/
+---
diff --git a/go.dev/_content/solutions/stream.md b/go.dev/_content/solutions/stream.md
new file mode 100644
index 0000000..c0a3702
--- /dev/null
+++ b/go.dev/_content/solutions/stream.md
@@ -0,0 +1,13 @@
+---
+linkTitle: Stream – Why We Switched from Python to Go
+description: Go’s combination of a great ecosystem, easy onboarding for new developers,
+  fast performance, solid support for concurrency and a productive programming
+  environment make it a great choice.
+  It allowed a small development team at Stream to power
+  feeds and chat for over 500 million end users.
+layout: solution
+company: Stream
+logoSrc: stream.png
+series: Case Studies
+link: https://getstream.io/blog/switched-python-go/
+---
diff --git a/go.dev/_content/solutions/trivago.md b/go.dev/_content/solutions/trivago.md
new file mode 100644
index 0000000..607c272
--- /dev/null
+++ b/go.dev/_content/solutions/trivago.md
@@ -0,0 +1,9 @@
+---
+linkTitle: Trivago – Why We Chose Go
+description: “Go’s simplicity and its sophisticated tooling let us scale not only our service but more importantly, the process of software engineering itself. Reducing the friction of onboarding and training someone has a significant impact on the company’s productivity, even more so in a constantly moving environment like trivago.”
+layout: solution
+company: Trivago
+logoSrc: trivago.png
+series: Case Studies
+link: https://tech.trivago.com/2020/03/02/why-we-chose-go/
+---
diff --git a/go.dev/testdata/golden/solutions/index.html b/go.dev/testdata/golden/solutions/index.html
index 0263bf5..a6769e2 100644
--- a/go.dev/testdata/golden/solutions/index.html
+++ b/go.dev/testdata/golden/solutions/index.html
@@ -241,7 +241,34 @@
 
 
       <li class="Solutions-card">
-
+        <a
+        href="https://blog.allegro.tech/2016/03/writing-fast-cache-service-in-go.html"
+        target="_blank"
+        rel="noopener"
+        class="Solutions-useCaseLink"
+        >
+        <div
+        class="Solutions-useCaseLogo Solutions-useCaseLogo--Allegro"
+        >
+        <img
+        loading="lazy"
+        alt="Allegro"
+        src="/images/logos/allegro.png"
+        >
+        </div>
+        <div class="Solutions-useCaseBody">
+        <h3 class="Solutions-useCaseTitle">Allegro – Writing a very fast cache service with millions of entries in Go</h3>
+        <p class="Solutions-useCaseDescription">
+        “Finally, we sped up our application from more than 2.5 seconds to less than 250 milliseconds for the longest request.”
+        </p>
+        </div>
+        <p class="Solutions-useCaseAction">
+        View blog post
+        <i class="material-icons Solutions-forwardArrowIcon">open_in_new</i>
+        </p>
+        </a>
+        </li>
+        <li class="Solutions-card">
         <a href="/solutions/americanexpress" class="Solutions-useCaseLink">
           <div class="Solutions-useCaseLogo">
             <img
@@ -585,6 +612,35 @@
       <li class="Solutions-card">
 
         <a
+        href="https://www.infoq.com/news/2017/03/monzo-bank-golang/"
+        target="_blank"
+        rel="noopener"
+        class="Solutions-useCaseLink"
+        >
+        <div
+        class="Solutions-useCaseLogo Solutions-useCaseLogo--Monzo"
+        >
+        <img
+        loading="lazy"
+        alt="Monzo"
+        src="/images/logos/monzo.png"
+        >
+        </div>
+        <div class="Solutions-useCaseBody">
+        <h3 class="Solutions-useCaseTitle">Monzo – Building a Bank with Golang, Microservices and Containers</h3>
+        <p class="Solutions-useCaseDescription">
+        “Go is a perfect language for creating microservice architectures, and the concurrency features, and the language in general, has allowed the easy creation of small and simple networked services at Monzo that are focused around the ‘single responsibility principle’.”
+        </p>
+        </div>
+        <p class="Solutions-useCaseAction">
+        View blog post
+        <i class="material-icons Solutions-forwardArrowIcon">open_in_new</i>
+        </p>
+        </a>
+        </li>
+        <li class="Solutions-card">
+
+        <a
           href="https://medium.com/netflix-techblog/application-data-caching-using-ssds-5bf25df851ef"
           target="_blank"
           rel="noopener"
@@ -699,6 +755,62 @@
       <li class="Solutions-card">
 
         <a
+        href="https://www.facebook.com/sixtkarriere/posts/find-out-more-about-golang-at-sixt-to-become-a-godeveloper-mfd-at-sixt-click-her/2049632898495842/"
+        target="_blank"
+        rel="noopener"
+        class="Solutions-useCaseLink"
+        >
+        <div
+        class="Solutions-useCaseLogo Solutions-useCaseLogo--SIXT"
+        >
+        <img
+        loading="lazy"
+        alt="SIXT"
+        src="/images/logos/sixt.png"
+        >
+        </div>
+        <div class="Solutions-useCaseBody">
+        <h3 class="Solutions-useCaseTitle">Find out more about Golang at SIXT</h3>
+        <p class="Solutions-useCaseDescription">
+        “We have been doing Golang at SIXT since 2015. Back then there was not that many people here in our area which were doing Golang in production mode, mostly side projects. So it was really a bold move from our side but it proved to be quite successful. Fast forward to 2019 we have over 15 teams doing Golang. Many of the applications they have built are basically foundation for most of our mobility product offer including Rent, Ride and Share.”
+        </p>
+        </div>
+        <p class="Solutions-useCaseAction">
+        View blog post
+        <i class="material-icons Solutions-forwardArrowIcon">open_in_new</i>
+        </p>
+        </a>
+        </li>
+        <li class="Solutions-card">
+        <a
+        href="https://getstream.io/blog/switched-python-go/"
+        target="_blank"
+        rel="noopener"
+        class="Solutions-useCaseLink"
+        >
+        <div
+        class="Solutions-useCaseLogo Solutions-useCaseLogo--Stream"
+        >
+        <img
+        loading="lazy"
+        alt="Stream"
+        src="/images/logos/stream.png"
+        >
+        </div>
+        <div class="Solutions-useCaseBody">
+        <h3 class="Solutions-useCaseTitle">Stream – Why We Switched from Python to Go</h3>
+        <p class="Solutions-useCaseDescription">
+        Go’s combination of a great ecosystem, easy onboarding for new developers, fast performance, solid support for concurrency and a productive programming environment make it a great choice. It allowed a small development team at Stream to power feeds and chat for over 500 million end users.
+        </p>
+        </div>
+        <p class="Solutions-useCaseAction">
+        View blog post
+        <i class="material-icons Solutions-forwardArrowIcon">open_in_new</i>
+        </p>
+        </a>
+        </li>
+        <li class="Solutions-card">
+        <a
           href="https://tech.target.com/infrastructure/2018/06/18/Recommending-GoLang-at-Target.html"
           target="_blank"
           rel="noopener"
@@ -730,6 +842,34 @@
       <li class="Solutions-card">
 
         <a
+        href="https://tech.trivago.com/2020/03/02/why-we-chose-go/"
+        target="_blank"
+        rel="noopener"
+        class="Solutions-useCaseLink"
+        >
+        <div
+        class="Solutions-useCaseLogo Solutions-useCaseLogo--Trivago"
+        >
+        <img
+        loading="lazy"
+        alt="Trivago"
+        src="/images/logos/trivago.png"
+        >
+        </div>
+        <div class="Solutions-useCaseBody">
+        <h3 class="Solutions-useCaseTitle">Trivago – Why We Chose Go</h3>
+        <p class="Solutions-useCaseDescription">
+        “Go’s simplicity and its sophisticated tooling let us scale not only our service but more importantly, the process of software engineering itself. Reducing the friction of onboarding and training someone has a significant impact on the company’s productivity, even more so in a constantly moving environment like trivago.”
+        </p>
+        </div>
+        <p class="Solutions-useCaseAction">
+        View blog post
+        <i class="material-icons Solutions-forwardArrowIcon">open_in_new</i>
+        </p>
+        </a>
+        </li>
+        <li class="Solutions-card">
+        <a
           href="https://blog.twitch.tv/en/2016/07/05/gos-march-to-low-latency-gc-a6fa96f06eb7/"
           target="_blank"
           rel="noopener"