Add Curve 2023 annual review

reviews/sandbox/2023/2023-Curve-annual.md

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+# Curve 2023 Annual Review
+
+This is the annual review for the [Curve](https://opencurve.io) project for 2023.
+
+## Table of Contents
+
+*   [Curve 2023 Annual Review](#curve-2023-annual-review)
+*   [Table of Contents](#table-of-contents)
+*   [Background](#background)
+*   [DevStats](#devstats)
+*   [Maintainers](#maintainers)
+*   [Adoption](#adoption)
+*   [Project perform](#project-perform)
+*   [Project Goals](#project-goals)
+*   [Incubation readiness](#incubation-readiness)
+
+## Background
+
+Curve is a modern distributed storage system developed by netease, currently supporting file storage(CurveFS) and block storage(CurveBS). Now it's hosted at CNCF as a sandbox project.
+
+The core application scenarios of CurveBS mainly include:
+
+*   the performance, mixed, capacity cloud disk or persistent volume of virtual machine/container, and remote disks of physical machines
+*   high-performance separation of storage and computation architecture: high-performance and low latency architecture based on RDMA+SPDK, supporting the separation deployment structure of various databases such as MySQL and Kafka
+
+The core application scenarios of CurveFS mainly include:
+
+*   the cost-effective storage in AI training scene
+*   the hot and cold data automation layered storage in big data scenarios
+*   the cost-effective shared file storage on the public cloud: It can be used for business scenarios such as AI, big data, file sharing
+*   Hybrid storage: Hot data is stored in the local IDC, cold data is stored in public cloud
+
+Curve Architecture：
+
+<img src="https://github.com/opencurve/curve/blob/21e7dbcf65b36941f42fdb0a858ddbf0c15b1a27/docs/images/Curve-arch.png?raw=true" width="500" height="600" />
+
+
+
+## DevStats
+
+Curve DevStats dashboard [here](https://curve.devstats.cncf.io/d/1/activity-repository-groups?orgId=1\&from=now-1y\&to=now\&var-period=d7\&var-repogroups=All) shows an increase in contribution activities. Last year [100+ developers](https://curve.devstats.cncf.io/d/66/developer-activity-counts-by-companies?orgId=1\&var-period_name=Last%20year\&var-metric=contributions\&var-repogroup_name=All\&var-country_name=All\&var-companies=All) contribute to Curve.
+
+
+## Maintainers
+
+*   No new Maintainer at last year and one retired due to work change.
+*   3 contributors NOT from NetEase became committers at last year, we hope they can became Maintainers in this year.
+
+| Maintainer  | GitHub Username                              | Company |
+| ----------- | -------------------------------------------- | ------- |
+| Wangpan     | [@aspirer](https://github.com/aspirer)       | NetEase |
+| XiaoCui Li  | [@ilixiaocui](https://github.com/ilixiaocui) | NetEase |
+| HongSong Wu | [@wuhongsong](https://github.com/wuhongsong) | NetEase |
+| JingLi Chen | [@Wine93](https://github.com/Wine93)         | NetEase |
+| Yi Cheng    | [@Cyber-SiKu](https://github.com/Cyber-SiKu) | NetEase |
+| HanQing Wu  | [@wu-hanqing](https://github.com/wu-hanqing) | NetEase |
+
+We hope to see more diversity in the maintainer team.
+
+## Adoption
+
+Belows are the NEW companies this year that we know have deployed Curve in their own
+infrastructure or integrated Curve as part of their products.
+
+*   Zstack
+*   SmartMore 
+*   Wanfang SCI.&Tech
+*   ZheJiang Yixin Tech
+*   Jiangsu Rural Credit Union
+
+
+## Project perform
+
+This year, we are continuing to add new features to Curve. Some key features added to the project:
+
+*   A brand new Document website, a forum community and a Wechat Official Account for users.
+*   Support RDMA+SPDK for CurveBS, provides ~50% lower IO latency than TCP+Ext4 engine
+*   Cloud-native database(shared-storage) support base on PolarFS and CurveBS
+*   Support storing snapshot in local CurveBS cluster, no longer rely heavily on S3 storage
+*   Add hybrid storage engine with SSD/NVMe and HDD for CurveBS
+*   Support CurveFS which is POSIX-compatible and mountable by FUSE,  and can store data in Object Storage System by S3-like interface, or store in CurveBS
+*   Add memory buffer, local disk, distributed k-v data caches, as well as metadata memory caches for CurveFS
+*   Developed a new deployment tool CurveAdm, and refactored a new command line tool for CurveBS and CurveFS
+*   Support deploy CurveBS and CurveFS on kubernetes, and also CSI plugin for them
+
+## Project Goals
+
+The goal of Curve this year is to increase the diversity in both contributors and adoption. Some key works include:
+
+*   More timely update about Curve new features based on our roadmap.
+*   Improve user documentation, publish more user cases, and provide more help for community user testing.
+*   Investigate the needs of community users and design and develop related needs.
+
+## Incubation readiness
+
+Not submitted yet, we still want to further improve the Curve project, and consider submitting after getting more community user cases and more diversity of maintainers.
+
+
+