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docs: move all docs into sidebar
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---
title: Unleash introductory overview
---
docs: Minor typos (#6014) Some minor typos in our docs.
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One of the most important aspects of the architecture to understand is that feature toggles are evaluated in client SDKs which runs as part of your application. This makes toggle evaluations super-fast (_we're talking nano-seconds_), scalable and resilient against network disturbances. In order to achieve this Unleash incurs a small update-delay when you change your toggle configurations until it is fully propagated to your application (in terms of seconds and is configurable).
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If you want more details you can read about [our unique architecture](https://www.getunleash.io/blog/our-unique-architecture).
### Unleash Server {#unleash-server}
Before you can connect your application to Unleash you need a Unleash server. You have a few options available:
Navigation refactor (#5227) ## About the changes Refactor the main nav, with the following goals: * Communicate the value of each section vs the format (ex: “Understanding Unleash” vs “Topic Guides”) * Make space for the Feature Flag tutorials section that we’re starting to build * Scope updates to navigation and pages that need updates based on new URLs & organization * Update URLs to follow the new hierarchy without breaking links (adding redirects & editing internal links between pages as needed) ### Important files sidebar.js docusaurus.config.js ## Discussion points * Redirects can't be tested out of prod, which is a bummer :/ * Some URLs have been preserved untouched while we monitor for potential negative SEO impact of client-side redirects * It's a large PR (sorry). Nav changes and file movements impacted lots of files. --------- Co-authored-by: Thomas Heartman <thomas@getunleash.ai>
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1. **Unleash Open-Source**
- [Docker](../using-unleash/deploy/getting-started.md)
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- [Helm Chart](https://github.com/unleash/helm-charts/)
Add GitLab to Unleash server options (#1799)
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- [GitLab](https://docs.gitlab.com/ee/operations/feature_flags.html#choose-a-client-library)
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2. **Unleash Enterprise**
- [Hosted Plans](https://www.getunleash.io/plans)
- [Self-hosted](https://www.getunleash.io/blog/self-host-your-feature-toggle-system)
### System Overview {#system-overview}
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![A visual overview of an Unleash system as described in the following paragraph.](/img/unleash-architecture-edge.png 'System Overview')
docs: move all docs into sidebar
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refactor: move docs into new structure / fix links for SEO (#2416) ## What This (admittedly massive) PR updates the "physical" documentation structure and fixes url inconsistencies and SEO problems reported by marketing. The main points are: - remove or move directories : advanced, user_guide, deploy, api - move the files contained within to the appropriate one of topics, how-to, tutorials, or reference - update internal doc links and product links to the content - create client-side redirects for all the urls that have changed. A number of the files have been renamed in small ways to better match their url and to make them easier to find. Additionally, the top-level api directory has been moved to /reference/api/legacy/unleash (see the discussion points section for more on this). ## Why When moving our doc structure to diataxis a while back, we left the "physical' files lying where they were, because it didn't matter much to the new structure. However, that did introduce some inconsistencies with where you place docs and how we organize them. There's also the discrepancies in whether urls us underscores or hyphens (which isn't necessarily the same as their file name), which has been annoying me for a while, but now has also been raised by marketing as an issue in terms of SEO. ## Discussion points The old, hand-written API docs have been moved from /api to /reference/api/legacy/unleash. There _is_ a /reference/api/unleash directory, but this is being populated by the OpenAPI plugin, and mixing those could only cause trouble. However, I'm unsure about putting /legacy/ in the title, because the API isn't legacy, the docs are. Maybe we could use another path? Like /old-docs/ or something? I'd appreciate some input on this.
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- [**The Unleash API**](/reference/api/unleash) - The Unleash instance. This is where you create feature toggles, configure activation strategies, and parameters, etc. The service holding all feature toggles and their configurations. Configurations declare which activation strategies to use and which parameters they should get.
- **The Unleash admin UI** - The bundled web interface for interacting with the Unleash instance. Manage toggles, define strategies, look at metrics, and much more. Use the UI to [create feature toggles](how-to/how-to-create-feature-toggles.md), [manage project access roles](../how-to/how-to-create-and-assign-custom-project-roles.md), [create API tokens](how-to/how-to-create-api-tokens.mdx), and more.
- [**Unleash SDKs**](../reference/sdks/index.md) - Unleash SDKs integrate into your applications and get feature configurations from the Unleash API. Use them to check whether features are enabled or disabled and to send metrics to the Unleash API. [See all our SDKs](../reference/sdks/index.md)
update to add Edge to overview
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- [**The Unleash Edge**](../generated/unleash-edge.md) - The Unleash Edge sits between front-end and native applications and the Unleash API, it can also sit between server-side SDKs and the Unleash API as well. You can scale it independently of the Unleash API to handle large request rates without causing issues for the Unleash API. Edge has all endpoints for the client API, frontend API, and proxy API.
docs: move all docs into sidebar
2022-01-12 11:44:14 +01:00
refactor: move docs into new structure / fix links for SEO (#2416) ## What This (admittedly massive) PR updates the "physical" documentation structure and fixes url inconsistencies and SEO problems reported by marketing. The main points are: - remove or move directories : advanced, user_guide, deploy, api - move the files contained within to the appropriate one of topics, how-to, tutorials, or reference - update internal doc links and product links to the content - create client-side redirects for all the urls that have changed. A number of the files have been renamed in small ways to better match their url and to make them easier to find. Additionally, the top-level api directory has been moved to /reference/api/legacy/unleash (see the discussion points section for more on this). ## Why When moving our doc structure to diataxis a while back, we left the "physical' files lying where they were, because it didn't matter much to the new structure. However, that did introduce some inconsistencies with where you place docs and how we organize them. There's also the discrepancies in whether urls us underscores or hyphens (which isn't necessarily the same as their file name), which has been annoying me for a while, but now has also been raised by marketing as an issue in terms of SEO. ## Discussion points The old, hand-written API docs have been moved from /api to /reference/api/legacy/unleash. There _is_ a /reference/api/unleash directory, but this is being populated by the OpenAPI plugin, and mixing those could only cause trouble. However, I'm unsure about putting /legacy/ in the title, because the API isn't legacy, the docs are. Maybe we could use another path? Like /old-docs/ or something? I'd appreciate some input on this.
2022-11-22 10:05:30 +01:00
To be super fast (_we're talking nano-seconds_), the [client SDK](../reference/sdks/index.md) caches all feature toggles and their current configuration in memory. The activation strategies are also implemented in the SDK. This makes it really fast to check if a toggle is on or off because it is just a simple function operating on local state, without the need to poll data from the database.
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