Hermann  Frami

Hermann Frami


RisingWave: The Next-generation Streaming Database in The Cloud


RisingWave is now ready for production! Curious about the use cases? More details coming soon!

RisingWave is a cloud-native streaming database that uses SQL as the interface language. It is designed to reduce the complexity and cost of building real-time applications. RisingWave consumes streaming data, performs continuous queries, and updates results dynamically. As a database system, RisingWave maintains results inside its own storage and allows users to access data efficiently.

RisingWave ingests data from sources like Apache Kafka, Apache Pulsar, Amazon Kinesis, Redpanda, and materialized CDC sources.

Learn more at Introduction to RisingWave.

Quick Start


There are two ways to install RisingWave: use a pre-built package or compile from source.

Use a Pre-built Package (Linux)

# Download the pre-built binary
wget https://github.com/risingwavelabs/risingwave/releases/download/v0.1.13/risingwave-v0.1.13-x86_64-unknown-linux.tar.gz
# Unzip the binary
tar xvf risingwave-v0.1.13-x86_64-unknown-linux.tar.gz
# Start RisingWave in single-binary playground mode
./risingwave playground

Use Docker (Linux, macOS)

# Start RisingWave in single-binary playground mode
docker run -it --pull=always -p 4566:4566 -p 5691:5691 ghcr.io/risingwavelabs/risingwave:v0.1.13 playground

Compile from Source with RiseDev (Linux and macOS)

# Install Rust toolchain
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
# Clone the repo
git clone https://github.com/risingwavelabs/risingwave.git && cd risingwave
# Compile and start the playground
./risedev playground

To build from source, you need to pre-install several tools in your system. You may use ./risedev configure to configure compile settings. Please refer to the developer guide for more information.

You can launch a RisingWave cluster and process streaming data in a distributed manner, and enable other features like metrics collection and data persistence. Please refer to the developer guide for more information.

Your First Query

To connect to the RisingWave server, you will need to install PostgreSQL shell (psql) in advance.

# Use psql to connect RisingWave cluster
psql -h localhost -p 4566 -d dev -U root
/* create a table */
create table t1(v1 int);

/* create a materialized view based on the previous table */
create materialized view mv1 as select sum(v1) as sum_v1 from t1;

/* insert some data into the source table */
insert into t1 values (1), (2), (3);

/* (optional) ensure the materialized view has been updated */

/* the materialized view should reflect the changes in source table */
select * from mv1;

If everything works correctly, you should see

(1 row)

in the terminal.

Connecting to an External Source

Please refer to get started guide for more information.


To learn about how to use RisingWave, refer to RisingWave docs. To learn about the development process, see the developer guide. To understand the design and implementation of RisingWave, refer to the design docs listed in readme.md.


Thanks for your interest in contributing to the project! Please refer to contribution guidelines for more information.

Download Details:

Author: Risingwavelabs
Source Code: https://github.com/risingwavelabs/risingwave 
License: Apache-2.0 license

#serverless #rust #sql #database 

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RisingWave: The Next-generation Streaming Database in The Cloud
Adaline  Kulas

Adaline Kulas


Multi-cloud Spending: 8 Tips To Lower Cost

A multi-cloud approach is nothing but leveraging two or more cloud platforms for meeting the various business requirements of an enterprise. The multi-cloud IT environment incorporates different clouds from multiple vendors and negates the dependence on a single public cloud service provider. Thus enterprises can choose specific services from multiple public clouds and reap the benefits of each.

Given its affordability and agility, most enterprises opt for a multi-cloud approach in cloud computing now. A 2018 survey on the public cloud services market points out that 81% of the respondents use services from two or more providers. Subsequently, the cloud computing services market has reported incredible growth in recent times. The worldwide public cloud services market is all set to reach $500 billion in the next four years, according to IDC.

By choosing multi-cloud solutions strategically, enterprises can optimize the benefits of cloud computing and aim for some key competitive advantages. They can avoid the lengthy and cumbersome processes involved in buying, installing and testing high-priced systems. The IaaS and PaaS solutions have become a windfall for the enterprise’s budget as it does not incur huge up-front capital expenditure.

However, cost optimization is still a challenge while facilitating a multi-cloud environment and a large number of enterprises end up overpaying with or without realizing it. The below-mentioned tips would help you ensure the money is spent wisely on cloud computing services.

  • Deactivate underused or unattached resources

Most organizations tend to get wrong with simple things which turn out to be the root cause for needless spending and resource wastage. The first step to cost optimization in your cloud strategy is to identify underutilized resources that you have been paying for.

Enterprises often continue to pay for resources that have been purchased earlier but are no longer useful. Identifying such unused and unattached resources and deactivating it on a regular basis brings you one step closer to cost optimization. If needed, you can deploy automated cloud management tools that are largely helpful in providing the analytics needed to optimize the cloud spending and cut costs on an ongoing basis.

  • Figure out idle instances

Another key cost optimization strategy is to identify the idle computing instances and consolidate them into fewer instances. An idle computing instance may require a CPU utilization level of 1-5%, but you may be billed by the service provider for 100% for the same instance.

Every enterprise will have such non-production instances that constitute unnecessary storage space and lead to overpaying. Re-evaluating your resource allocations regularly and removing unnecessary storage may help you save money significantly. Resource allocation is not only a matter of CPU and memory but also it is linked to the storage, network, and various other factors.

  • Deploy monitoring mechanisms

The key to efficient cost reduction in cloud computing technology lies in proactive monitoring. A comprehensive view of the cloud usage helps enterprises to monitor and minimize unnecessary spending. You can make use of various mechanisms for monitoring computing demand.

For instance, you can use a heatmap to understand the highs and lows in computing visually. This heat map indicates the start and stop times which in turn lead to reduced costs. You can also deploy automated tools that help organizations to schedule instances to start and stop. By following a heatmap, you can understand whether it is safe to shut down servers on holidays or weekends.

#cloud computing services #all #hybrid cloud #cloud #multi-cloud strategy #cloud spend #multi-cloud spending #multi cloud adoption #why multi cloud #multi cloud trends #multi cloud companies #multi cloud research #multi cloud market

Adaline  Kulas

Adaline Kulas


What are the benefits of cloud migration? Reasons you should migrate

The moving of applications, databases and other business elements from the local server to the cloud server called cloud migration. This article will deal with migration techniques, requirement and the benefits of cloud migration.

In simple terms, moving from local to the public cloud server is called cloud migration. Gartner says 17.5% revenue growth as promised in cloud migration and also has a forecast for 2022 as shown in the following image.

#cloud computing services #cloud migration #all #cloud #cloud migration strategy #enterprise cloud migration strategy #business benefits of cloud migration #key benefits of cloud migration #benefits of cloud migration #types of cloud migration

Ruth  Nabimanya

Ruth Nabimanya


System Databases in SQL Server


In SSMS, we many of may noticed System Databases under the Database Folder. But how many of us knows its purpose?. In this article lets discuss about the System Databases in SQL Server.

System Database

Fig. 1 System Databases

There are five system databases, these databases are created while installing SQL Server.

  • Master
  • Model
  • MSDB
  • Tempdb
  • Resource
  • This database contains all the System level Information in SQL Server. The Information in form of Meta data.
  • Because of this master database, we are able to access the SQL Server (On premise SQL Server)
  • This database is used as a template for new databases.
  • Whenever a new database is created, initially a copy of model database is what created as new database.
  • This database is where a service called SQL Server Agent stores its data.
  • SQL server Agent is in charge of automation, which includes entities such as jobs, schedules, and alerts.
  • The Tempdb is where SQL Server stores temporary data such as work tables, sort space, row versioning information and etc.
  • User can create their own version of temporary tables and those are stored in Tempdb.
  • But this database is destroyed and recreated every time when we restart the instance of SQL Server.
  • The resource database is a hidden, read only database that holds the definitions of all system objects.
  • When we query system object in a database, they appear to reside in the sys schema of the local database, but in actually their definitions reside in the resource db.

#sql server #master system database #model system database #msdb system database #sql server system databases #ssms #system database #system databases in sql server #tempdb system database

Google Cloud: Caching Cloud Storage content with Cloud CDN

In this Lab, we will configure Cloud Content Delivery Network (Cloud CDN) for a Cloud Storage bucket and verify caching of an image. Cloud CDN uses Google’s globally distributed edge points of presence to cache HTTP(S) load-balanced content close to our users. Caching content at the edges of Google’s network provides faster delivery of content to our users while reducing serving costs.

For an up-to-date list of Google’s Cloud CDN cache sites, see https://cloud.google.com/cdn/docs/locations.

Task 1. Create and populate a Cloud Storage bucket

Cloud CDN content can originate from different types of backends:

  • Compute Engine virtual machine (VM) instance groups
  • Zonal network endpoint groups (NEGs)
  • Internet network endpoint groups (NEGs), for endpoints that are outside of Google Cloud (also known as custom origins)
  • Google Cloud Storage buckets

In this lab, we will configure a Cloud Storage bucket as the backend.

#google-cloud #google-cloud-platform #cloud #cloud storage #cloud cdn

Tia  Gottlieb

Tia Gottlieb


Enterprise cloud databases made easy

Week 6 of Google Cloud Next ‘20: OnAir was all about Google Cloud databases and how to choose and use them, no matter where you are in your cloud journey. There was plenty to explore, from deep-dive sessions and demos to feature launches and customer stories. Across it all, what stood out is the strong momentum and adoption across Google Cloud databases for developers and enterprises alike.

Google Cloud’s range of databases are designed to help you tackle the unpredictable. Your databases shouldn’t get in the way of innovation and growth, but many legacy, on-prem databases are holding businesses back. We build our databases to meet you at any stage, whether it’s an as-is migration or a brand-new app developed in the cloud.

Key data management announcements this week

This week, we launched new features aimed at solving the hardest data problems to help our customers run the most mission-critical applications. We kicked off the week with a keynote from Director of Product Management Penny Avril, who talked with social media platform ShareChat about how they met a 500% increase in demand using Cloud Spanner without changing a line of code.

We also announced updates to our databases. For Spanner, the Spanner Emulator lets app developers do correctness testing when developing an app. A new C++ client library and increased SQL feature set also add more flexibility. In addition, cloud-native Spanner now offers new multi-region configurations for Asia and Europe with 99.999% availability. NoSQL database service Cloud Bigtable now offers more capabilities, like managed backups for high business continuity and added data protection. And expanded support and SLA for single-node production instances makes it even easier to use Bigtable for all use cases, both large and small. Mobile and web developers use Cloud Firestore to build apps easily, and it now offers a richer query language, C++ client library, and Firestore Unity SDK to make it easy for game developers to adopt Firestore. We are also introducing tools to give you better visibility into usage patterns and performance with Firestore Key Visualizer, which will be coming soon.

#google cloud platform #next #databases #cloud