How can Redis be used?

There is more to Redis than just caching.

Redis can be used in a variety of scenarios as shown in the diagram.

🔹Session
We can use Redis to share user session data among different services.
🔹Cache
We can use Redis to cache objects or pages, especially for hotspot data.
🔹Distributed lock
We can use a Redis string to acquire locks among distributed services.
🔹Counter
We can count how many likes or how many reads for articles.
🔹Rate limiter
We can apply a rate limiter for certain user IPs.
🔹Global ID generator
We can use Redis Int for global ID.
🔹Shopping cart
We can use Redis Hash to represent key-value pairs in a shopping cart.
🔹Calculate user retention
We can use Bitmap to represent the user login daily and calculate user retention.
🔹Message queue
We can use List for a message queue.
🔹Ranking
We can use ZSet to sort the articles.

#redis #application #devops

Top 10 kubernetes Design Patterns

#kubernetes #infrastructure
#systemDesign

10 Key Data Structures We Use Every Day

🔸list: keep your Twitter feeds
🔸stack: support undo/redo of the word editor
🔸queue: keep printer jobs, or send user actions in-game
🔸hash table: cashing systems
🔸Array: math operations
🔸heap: task scheduling
🔸tree: keep the HTML document, or for AI decision
🔸suffix tree: for searching string in a document
🔸graph: for tracking friendship, or path finding
🔸r-tree: for finding the nearest neighbor
🔸 vertex buffer: for sending data to GPU for rendering

#devops #algorithms

Grafana LOKI one of the best tools for log collection, with good and reliable distributed architecture 🧗‍♂

#grafana #devops #loki

https://youtu.be/0B-yQdSXFJE?si=pNp00yotpJCcmT-n

For those who are not familiar with Linux🤓, I suggest you start getting to know it through this free course from Linux Foundation 🎁

#devops #linux #training #learning #freecourses

https://training.linuxfoundation.org/training/introduction-to-linux/

📚10 books Every Software Engineer should read

#books #learning_path #devops
#software #engineering

👥 Monolithic VS Microservices architecture

#devops #infrastructure

👉 𝗛𝗲𝗿𝗲'𝘀 𝗮 𝗯𝗿𝗲𝗮𝗸𝗱𝗼𝘄𝗻 𝗼𝗳 𝗵𝗼𝘄 𝗗𝗼𝗰𝗸𝗲𝗿 𝘄𝗼𝗿𝗸𝘀:

➡️𝗗𝗼𝗰𝗸𝗲𝗿 𝗰𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿𝘀 are self-contained units that package your application code, runtime, system tools, settings, and libraries
➡️𝗗𝗼𝗰𝗸𝗲𝗿 𝗶𝗺𝗮𝗴𝗲𝘀 are blueprints that contain instructions for creating containers.
➡️𝗗𝗼𝗰𝗸𝗲𝗿 𝗱𝗮𝗲𝗺𝗼𝗻 (𝗱𝗼𝗰𝗸𝗲𝗿𝗱) is the engine that builds, runs, and manages Docker containers.
➡️𝗗𝗼𝗰𝗸𝗲𝗿 𝗖𝗟𝗜 is the tool you use to interact with the Docker daemon.
➡️𝗗𝗼𝗰𝗸𝗲𝗿 𝗿𝗲𝗴𝗶𝘀𝘁𝗿𝗶𝗲𝘀 are repositories that store and share Docker images.
➡️𝗗𝗼𝗰𝗸𝗲𝗿 𝘀𝘁𝗼𝗿𝗮𝗴𝗲 𝗱𝗿𝗶𝘃𝗲𝗿𝘀 manage how data is stored and persisted within containers.
➡️𝗖𝗼𝗻𝘁𝗮𝗶𝗻𝗲𝗿 𝗼𝗿𝗰𝗵𝗲𝘀𝘁𝗿𝗮𝘁𝗼𝗿𝘀 like Kubernetes that help you manage and scale large deployments of Docker containers. They take care of provisioning, scheduling, and healing your containers, making it easier to run complex applications in production.

#devops #docker #containers
#architecture #infrastructure

✨7 must-know strategies to scale your database.

1️⃣ Indexing:
Check the query patterns of your application and create the right indexes.
2️⃣ Materialized Views:
Pre-compute complex query results and store them for faster access.
3️⃣ Denormalization:
Reduce complex joins to improve query performance.
4️⃣ Vertical Scaling
Boost your database server by adding more CPU, RAM, or storage.
5️⃣ Caching
Store frequently accessed data in a faster storage layer to reduce database load.
6️⃣ Replication
Create replicas of your primary database on different servers for scaling the reads.
7️⃣ Sharding
Split your database tables into smaller pieces and spread them across servers. Used for scaling the writes as well as the reads.

#architecture #systemdesign #optimization #highloads #databases

Let's get started with Terraform
🧤 a tool provided by HashiCorp for writing, planning
and creating infrastructure as code (IaC) in various cloud services.

🔬Well, let's start with an excellent course
Which is basically not big and you will need a trial access
to educative.io to complete it. This course is perfect for those
who want to understand the basics of Terraform and start
confidently creating infrastructure in AWS and beyond with a declarative approach.

🥷🏻 Terraform: From Beginner to Master with Examples in AWS
https://www.educative.io/courses/terraform-beginner-master-aws?affiliate_id=5073518643380224

#AWS #Terraform #devops
#training #learning

🗣 Load balancers improve application performance, availability, and scalability 💪🏼
🔹Traffic Distribution:
Load balancers evenly distribute incoming traffic among a pool of servers, ensuring optimal resource utilization and preventing any single server from becoming overwhelmed.
🔸High Availability:
If a server fails, the load balancer automatically redirects traffic to the remaining healthy servers.
🔹SSL Termination:
Load balancers can handle SSL/TLS encryption and decryption, offloading this CPU-intensive task from backend servers.
🔸Session Persistence:
For applications that require maintaining user sessions on a specific server, load balancers support session persistence.
🔹Scalability:
Load balancers facilitate horizontal scaling by allowing easy addition of servers to the pool.
🔸Health Monitoring:
Load balancers continuously monitor server health and performance. They exclude unhealthy servers from the pool, ensuring that only healthy servers handle in requests.
#HighAvailability #Architecture #DevOps

👨‍🏫Roadmap to master machine learning

#machine_learning #devops #infrastructure #learning

▶️ We are starting to learn AWS and I think it is better to start with this course ( Prepare for the AWS Certified Solutions Architect - Associate (SAA-C03) Certification)

➡️ This is a great course for those who want to dive into the world of Amazon Web Services and acquire perhaps the best cloud tools for implementing the best DevOps practices in the future, creating a dynamic infrastructure platform for your projects.

#learning #aws #devops
#infrastructure #training

https://www.linkedin.com/learning/paths/prepare-for-the-aws-certified-solutions-architect-associate-saa-c03-certification

Hello everyone ✋A very tasty 🍯 video from Victor arrived, a very cool concept of a continuous delivery pipeline with gitops approaches on my favorite today's stack of technology
#crossplane #argocd #aws #github_actions #eks

💎 "Automate Everything: How One Manifest Powers Your Entire DevOps Pipeline"

https://youtu.be/IEgXJEkjBZ0

What does API gateway do?🕵🏼

👣 (1) The client sends an HTTP request to the API gateway.
👣 (2) The API gateway parses and validates the attributes in the HTTP request.
👣 (3) The API gateway performs allow-list/deny-list checks.
👣 (4) The API gateway talks to an identity provider for authentication and authorization.
👣 (5) The rate limiting rules are applied to the request. If it is over the limit, the request is rejected.
👣 (6,7) Now that the request has passed basic checks, the API gateway finds the relevant service to route to by path matching.
👣 (8) The API gateway transforms the request into the appropriate protocol and sends it to backend microservices.
👣 (9-12) The API gateway can handle errors properly, and deals with faults if the error takes a longer time to recover (circuit break). It can also leverage ELK (Elastic-Logstash-Kibana) stack for logging and monitoring. We sometimes cache data in the API gateway.

#api #app #architecture
#SystemDesign #HTTP

How its Linux Boot Process works ? 🕵🏻‍♂️

🔌 When we turn on the power, BIOS or UEFI firmware is loaded from non-volatile memory, and executes POST (Power On Self Test).
💽 BIOS/UEFI detects the devices connected to the system, including CPU, RAM, and storage.
💿 Choose a booting device to boot the OS from. This can be the hard drive, the network server, or CD ROM.
📀 BIOS/UEFI runs the boot loader (GRUB), which provides a menu to choose the OS or the kernel functions.
🖥 After the kernel is ready, we now switch to the user space. The kernel starts up systemd as the first user-space process, which manages the processes and services, probes all remaining hardware, mounts filesystems, and runs a desktop environment.
📟 systemd activates the default. target unit by default when the system boots. Other analysis units are executed as well.
🎚The system runs a set of startup scripts and configure the environment.
📱The users are presented with a login window. The system is now ready.

#linux #boot #systemdesign