Backport to branch(3.12) : Remove docs directory and update README

.github/workflows/ci.yaml

@@ -120,52 +120,6 @@ jobs:
         with:
           arguments: :schema-loader:dockerfileLint
 
-  build-check-example-project:
-    name: Build check for 'Getting Started' example project
-    runs-on: ubuntu-latest
-
-    defaults:
-      run:
-        working-directory: docs/getting-started
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Set up JDK ${{ env.JAVA_VERSION }} (${{ env.JAVA_VENDOR }})
-        uses: actions/setup-java@v4
-        with:
-          java-version: ${{ env.JAVA_VERSION }}
-          distribution: ${{ env.JAVA_VENDOR }}
-
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v3
-
-      - name: Build Getting Started project
-        run: ./gradlew assemble
-
-  build-check-example-project-for-kotlin:
-    name: Build check for 'Getting Started' example project for Kotlin
-    runs-on: ubuntu-latest
-
-    defaults:
-      run:
-        working-directory: docs/getting-started-kotlin
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Set up JDK ${{ env.JAVA_VERSION }} (${{ env.JAVA_VENDOR }})
-        uses: actions/setup-java@v4
-        with:
-          java-version: ${{ env.JAVA_VERSION }}
-          distribution: ${{ env.JAVA_VENDOR }}
-
-      - name: Setup Gradle
-        uses: gradle/actions/setup-gradle@v3
-
-      - name: Build Getting Started project
-        run: ./gradlew assemble
-
   integration-test-for-cassandra-3-0:
     name: Cassandra 3.0 integration test
     runs-on: ubuntu-latest

README.md

@@ -1,10 +1,9 @@
 # ScalarDB
 
-ScalarDB is a universal transaction manager that achieves:
-- database/storage-agnostic ACID transactions in a scalable manner even if an underlying database or storage is not ACID-compliant.
-- multi-storage/database/service ACID transactions that can span multiple (possibly different) databases, storages, and services.
+ScalarDB is a cross-database HTAP engine. It achieves ACID transactions and real-time analytics across diverse databases to simplify the complexity of managing multiple databases.
 
 ## Install
+
 The library is available on [maven central repository](https://mvnrepository.com/artifact/com.scalar-labs/scalardb).
 You can install it in your application using your build tool such as Gradle and Maven.
 
@@ -26,36 +25,10 @@ To add a dependency using Maven:
 
 ## Docs
 
-* [ScalarDB Documentation](https://scalardb.scalar-labs.com/docs/latest/)
-  * [ScalarDB Overview](https://scalardb.scalar-labs.com/docs/latest/overview)
-  * [ScalarDB Design Document](https://scalardb.scalar-labs.com/docs/latest/design/)
-  * [Getting Started with ScalarDB](https://scalardb.scalar-labs.com/docs/latest/getting-started-with-scalardb/)
-  * [Getting Started with ScalarDB by Using Kotlin](https://scalardb.scalar-labs.com/docs/latest/getting-started-with-scalardb-by-using-kotlin/)
-  * [Add ScalarDB to Your Build](https://scalardb.scalar-labs.com/docs/latest/add-scalardb-to-your-build/)
-  * [ScalarDB Java API Guide](https://scalardb.scalar-labs.com/docs/latest/api-guide/)
-  * [Multi-Storage Transactions](https://scalardb.scalar-labs.com/docs/latest/multi-storage-transactions/)
-  * [Transactions with a Two-Phase Commit Interface](https://scalardb.scalar-labs.com/docs/latest/two-phase-commit-transactions/)
-  * [ScalarDB Schema Loader](https://scalardb.scalar-labs.com/docs/latest/schema-loader/)
-  * [Importing Existing Tables to ScalarDB by Using ScalarDB Schema Loader](https://scalardb.scalar-labs.com/docs/latest/schema-loader-import/)
-  * [Requirements and Recommendations for the Underlying Databases of ScalarDB](https://scalardb.scalar-labs.com/docs/latest/requirements/)
-  * [How to Back Up and Restore Databases Used Through ScalarDB](https://scalardb.scalar-labs.com/docs/latest/backup-restore/)
-  * [ScalarDB Supported Databases](https://scalardb.scalar-labs.com/docs/latest/scalardb-supported-databases/)
-  * [ScalarDB Configurations](https://scalardb.scalar-labs.com/docs/latest/configurations/)
-  * [Storage Abstraction and API Guide](https://scalardb.scalar-labs.com/docs/latest/storage-abstraction/)
-  * [ScalarDB Error Codes](https://scalardb.scalar-labs.com/docs/latest/scalardb-core-status-codes/)
-* Slides
-    * [Making Cassandra more capable, faster, and more reliable](https://speakerdeck.com/scalar/making-cassandra-more-capable-faster-and-more-reliable-at-apachecon-at-home-2020) at ApacheCon@Home 2020
-    * [Scalar DB: A library that makes non-ACID databases ACID-compliant](https://speakerdeck.com/scalar/scalar-db-a-library-that-makes-non-acid-databases-acid-compliant) at Database Lounge Tokyo #6 2020
-    * [Transaction Management on Cassandra](https://speakerdeck.com/scalar/transaction-management-on-cassandra) at Next Generation Cassandra Conference / ApacheCon NA 2019
-* Javadoc
-    * [scalardb](https://javadoc.io/doc/com.scalar-labs/scalardb/latest/index.html) - ScalarDB: A universal transaction manager that achieves database-agnostic transactions and distributed transactions that span multiple databases
-    * [scalardb-rpc](https://javadoc.io/doc/com.scalar-labs/scalardb-rpc/latest/index.html) - ScalarDB RPC libraries
-    * [scalardb-server](https://javadoc.io/doc/com.scalar-labs/scalardb-server/latest/index.html) - ScalarDB Server: A gRPC interface of ScalarDB
-    * [scalardb-schema-loader](https://javadoc.io/doc/com.scalar-labs/scalardb-schema-loader/latest/index.html) - ScalarDB Schema Loader: A tool for schema creation and schema deletion in ScalarDB
-* [Jepsen tests](https://github.com/scalar-labs/scalar-jepsen)
-* [TLA+](tla+/consensus-commit/README.md)
+See our [User Documentation](https://scalardb.scalar-labs.com/docs/latest/).
 
 ## Contributing
+
 This library is mainly maintained by the Scalar Engineering Team, but of course we appreciate any help.
 
 * For asking questions, finding answers and helping other users, please go to [stackoverflow](https://stackoverflow.com/) and use [scalardb](https://stackoverflow.com/questions/tagged/scalardb) tag.
@@ -80,7 +53,8 @@ $ pre-commit install
 The code formatter is automatically executed when committing files. A commit will fail and be formatted by the formatter when any invalid code format is detected. Try to commit the change again.
 
 ## License
+
 ScalarDB is dual-licensed under both the Apache 2.0 License (found in the LICENSE file in the root directory) and a commercial license.
 You may select, at your option, one of the above-listed licenses.
-The commercial license includes several enterprise-grade features such as ScalarDB Server, management tools, and declarative query interfaces like GraphQL and SQL interfaces.
-Regarding the commercial license, please [contact us](https://scalar-labs.com/contact_us/) for more information.
+The commercial license includes several enterprise-grade features such as ScalarDB Cluster, management tools, and declarative query interfaces like GraphQL and SQL interfaces.
+For more information about the commercial license, please [contact us](https://www.scalar-labs.com/contact).