Deep Dive of BigKey and HotKey Issues in Redis
The definition and impact of BigKey and HotKey, how to discover and handle
Redis Core Team Welcomes New Members
Alibaba Cloud Database Technical Expert Zhao Zhao has joined the Redis Core Team and will play a key role in the open-source Redis project.
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Redis 2.8, 4.0, and 5.0: Community Edition (standard architecture) with 4 GB of memory
New ApsaraDB for Redis Features Released
Learn more about ApsaraDB for Redis releases and keep up with the latest product features and services
ApsaraDB for Redis retrieves data from the in-memory cache to support high-speed reads and writes. ApsaraDB for Redis uses an in-memory store but also persists data on disks. It is suitable for high-performance web applications.
ApsaraDB for Redis supports a variety of data types in key-value pairs, such as strings, lists, sets, ordered sets, and hashes. It also supports advanced features, such as transactions, message subscriptions, and message publications.
ApsaraDB for Redis provides secure, scalable, and maintenance-free database services on the cloud. It also supports master-replica replication and cross-zone deployment to ensure high availability.
Various Instance Types
Highly Stable Architecture
Based on the Alibaba Cloud Apsara distributed operating system and high-performance SSD storage, the master-replica architecture guarantees automatic failover. RDB persistence and AOF persistence are supported.
High Performance and Scalability
Connection capacity and network throughput are configurable. Elastic configurations of cluster instances apply to high concurrency scenarios. You can scale the storage, network throughput, and connection capacity without service interruption.
Source Code Optimization
Alibaba Cloud senior experts provide professional services to optimize the kernel for higher performance and security, fix kernel vulnerabilities, and ensure service stability.
Smart Operations and Maintenance
It features visualized resource management, an end-to-end monitoring and alerting system, automatic upgrades for hands-free version control, and intelligent management and maintenance.
Wide Service Scope: A Variety of Business-Critical Services
Covers the entire lifecycle of business development to meet the requirements of high performance, cost-effectiveness, and data persistence during data processing
Developed based on open-source Redis, ApsaraDB for Redis is fully compatible with Redis-native data types and the Redis API. ApsaraDB for Redis provides Redis Database (RDB) persistence and Append Only File (AOF) persistence. Alibaba Cloud’s robust management capabilities provide stable database services on the cloud.
Enhanced Edition (Tair): Performance Enhanced
Compatible with open source Redis, performance-enhanced instances adopt the multi-threading I/O model, improve the queries per second (QPS) of each Redis node, and can handle a large number of concurrent connections. With a QPS value three times that of Community Edition instances, performance-enhanced instances apply to scenarios that require ultra-high concurrency and ultra-low latency. View details >
Tair (Redis Enterprise Edition): Persistent In-Memory
Persistent memory-optimized instances are databases that meet high-concurrency requirements. These instances adopt Intel Optane© memory, support native Redis commands, provide real-time data persistence capabilities, and are compatible with most Redis data structures and APIs. These instances allow you to store and query a large amount of warm and hot data at a low cost, and can reduce costs by up to 30% compared with Community Edition instances. Persistent memory-optimized instances apply to cost-sensitive scenarios that require high concurrency, low latency, and large-scale data storage. View details >
Tair (Redis Enterprise Edition): Capacity Storage
Storage-optimized instances are databases that meet high-concurrency requirements. These instances use Alibaba Cloud enhanced SSDs, support native Redis commands, provide real-time data persistence capabilities, and are compatible with most Redis data structures and APIs. These instances allow you to store and query an exceedingly large amount of warm and cold data at an ultra-low cost, and can reduce costs by up to 85% compared with Community Edition instances. Storage-optimized instances apply to latency-insensitive scenarios that require high concurrency, ultra-large-scale data storage, and ultra-low costs. View details >
Various Architectures: Single Shard, Master-Replica, Read/Write Splitting, and Distributed Cluster
Single node instances are suitable for caching scenarios. Master-replica instances feature automatic failover. Read/write splitting instances apply to scenarios where more reads are processed than writes. Cluster instances can be scaled out.
The replica node synchronizes to the master node in real-time. If the master node fails, the system automatically performs a failover and restores the services within a few seconds. Then, the replica node takes over the workloads. Your service is not interrupted during the failover process. The master-replica architecture ensures the high availability of your services.
Cluster instances run in a distributed architecture. Each shard contains a master node and a replica node to ensure high availability. Failovers are triggered when the master node fails. Multiple specifications are provided to deal with different workloads. You can upgrade your instances to improve the performance of the database service.
Read/Write Splitting Architecture
The read/write splitting architecture applies to scenarios where more reads are processed than writes. Each read/write splitting instance supports a maximum of 100,000 writes per second and 600,000 reads per second. This helps you eliminate the performance bottleneck of reading and writing hotkeys.
Data Security: Backup and Restoration, Multi-Layer Network Protection, and Disaster Recovery
Supports automatic backup, quick restoration, multi-layer network protection, zone-disaster recovery, and geo-disaster recovery
Backup and Restoration
Automatically performs backups and supports disaster recovery. You can restore data that is accidentally deleted to minimize your business losses.
Multi-Layer Network Protection
Virtual Private Cloud (VPC) isolates data transmission at the transport layer. Anti-DDoS detects and mitigates volumetric DDoS attacks in real-time. It allows you to configure more than 1,000 IP address whitelists to block malicious IP addresses.
Supports zone-disaster recovery, geo-disaster recovery, and cross-region disaster recovery to avoid data corruption at the physical layer.
In-Depth Kernel Optimization
Alibaba Cloud Technical Experts have optimized the kernel of open-source Redis to prevent out-of-memory errors and patch vulnerabilities.
Elasticity: Multidimensional Scaling and Transparent Upgrades
Dynamic upgrades to improve the performance and capacity of your instances. You can also switch between different architectures without service interruption.
Data Capacity Expansion
ApsaraDB for Redis instances are available in different memory capacities. You can adjust the memory capacity of your instance to meet business requirements.
The cluster architecture allows you to scale the storage and throughput of the databases. This eliminates the performance bottleneck and can handle tens of millions of reads and writes per second.
Supports the single node caching architecture and master-replica architecture to meet different business requirements. You can upgrade to master-replica instances or downgrade to standard instances when necessary.
Intelligent O&M: Professional Monitoring and Data Management Platform, and Automatic Kernel Version Upgrading
The Data Management (DMS) console and the ApsaraDB for Redis console are easy to use and can reduce management and maintenance expenses. The system is automatically upgraded to the latest version.
Monitors the CPU utilization, number of connections, and disk usage of instances in real time and raises alerts. This allows you to gain insights into your instances.
Visualized Management Platform
You can perform common and high-risk operations with only a few clicks in the ApsaraDB for Redis console. For example, you can clone instances, back up data, or restore data.
Visualized Data Management Platform
The DMS console allows you to manage data in a visualized manner. This improves development and maintenance efficiency.
Kernel Version Management
The kernel version is automatically upgraded and defects are patched at the earliest opportunity. This facilitates version control. Configuration parameters are optimized to increase the system resource utilization.
Single node instances are suitable for websites that deal with heavy reads and writes but require cost-effectiveness. Single node instances are intended for caching services. They provide high QPS performance and use RDS to persist data.
High Read/Write Performance
The single threading feature allows Redis to handle up to 100,000 QPS and can withstand more traffic loads if it is upgraded to a single node cluster instance.
Protects your workloads from single points of failure.
Single node instances are cost-effective and applicable to caching services.
Game companies release new games to attract more players and increase market share. ApsaraDB for Redis can reduce the complexity of application development and dynamically scale out to withstand heavy loads.
In the gaming industry, elastic scaling is required when developers create duplicate servers and users transfer data to different servers. Data persistence can decrease the load on the database engine and reduce development complexity.
You can clone instances from backup files to meet the gaming industry requirements of creating duplicate servers multiple times a day.
Backup files are retained free of charge for seven days. You can restore data with a few clicks to ensure data security.
Traffic spikes occur in live streaming scenarios. Cluster instances can overcome the single-threading bottleneck of Redis, handle millions of QPS, and meet the requirements of low response latency and high concurrency.
Transparent Elastic Scaling
Handles system access, user visits, and traffic spikes without affecting the current business.
Each shard in a cluster instance is deployed in a master-replica architecture to implement disaster recovery and ensure data security.
Seamlessly Integrated With Big Data Computing
In the e-commerce industry, large-scale promotion systems that run for a limited time and inventory systems with a counting feature are exposed to a huge amount of user traffic. ApsaraDB for Redis can withstand heavy reads and provide data persistence.
The single threading feature allows Redis to handle up to 100,000 QPS to meet the requirements of high concurrency scenarios.
Supports RDB persistence (creates point-in-time snapshots) and AOF persistence (logs operations).
Optimized Storage Architecture
Uses Redis + RDS storage architecture, and persists data in the cache and on disks to improve database performance.
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This online course explains the basic concepts, scenarios, and high-availability distributed cluster solutions. It also offers an installation guide.View Details
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