DEV Community: Jeremiah

Cost Optimization Strategies in Oracle Cloud Infrastructure

Jeremiah — Sat, 18 Apr 2026 02:41:57 +0000

Managing cloud costs effectively is essential for maximizing return on investment.

Monitoring and Logging in OCI: Keeping Your Cloud Healthy

Jeremiah — Sat, 18 Apr 2026 02:41:14 +0000

Monitoring and logging are essential for maintaining performance and identifying issues in cloud environments.

Securing Your OCI Environment with Identity and Access Management (IAM)

Jeremiah — Sat, 18 Apr 2026 02:40:15 +0000

Security is a top priority in cloud computing. Oracle Cloud Infrastructure Identity and Access Management (IAM) enables organizations to control access to resources securely.

Understanding OCI Load Balancers and Traffic Distribution

Jeremiah — Sat, 18 Apr 2026 02:38:44 +0000

Efficient traffic management is essential for delivering high-performing applications. OCI Load Balancing service helps distribute incoming traffic across multiple backend servers.

Designing a Highly Available Architecture in Oracle Cloud Infrastructure

Jeremiah — Sat, 18 Apr 2026 02:37:42 +0000

High availability is a critical component of modern cloud applications. In Oracle Cloud Infrastructure (OCI), designing systems that remain operational during failures requires thoughtful use of regions, availability domains, and fault domains.

OCI Networking Best Practices for Beginners

Jeremiah — Mon, 09 Mar 2026 01:01:08 +0000

Introduction

Designing cloud networks requires careful planning and the use of proven best practices. Oracle Cloud Infrastructure (OCI) provides a powerful set of networking tools that allow engineers to build secure, scalable, and reliable cloud architectures.

Best Practices

Use Private Subnets for Sensitive Resources
Critical services such as databases and internal applications should be placed in private subnets to limit direct internet exposure and improve security.

Apply Multiple Security Layers
Combining security lists and network security groups (NSGs) helps create stronger protection by controlling traffic at both the subnet and resource levels.

Use Clear Naming Conventions
Consistent and descriptive naming for networks, subnets, and gateways makes environments easier to manage and troubleshoot.

Plan CIDR Blocks Carefully
Proper CIDR planning prevents overlapping IP ranges and ensures your network can scale as infrastructure grows.

Conclusion

Following these networking best practices helps ensure OCI environments remain secure, organized, and scalable. With thoughtful design and proper configuration, organizations can build cloud networks that support modern applications while maintaining strong security and performance.

Deploying Your First Cloud Architecture in OCI

Jeremiah — Mon, 09 Mar 2026 00:58:02 +0000

Introduction

Deploying a basic cloud architecture in **Oracle Cloud Infrastructure requires several networking components working together.

Example Architecture
A typical architecture includes:
• VCN
• Public subnet
• Private subnet
• Internet gateway
• Route tables

Deployment Steps
1 Create a VCN
2 Configure subnets
3 Attach internet gateway
4 Configure route tables
5 Launch compute instances

Conclusion
By combining networking services in OCI, developers can build powerful cloud environments that support modern applications.

How OCI Route Tables Control Network Traffic

Jeremiah — Mon, 09 Mar 2026 00:56:05 +0000

Introduction

Route tables play a critical role in directing traffic inside an Oracle Cloud Infrastructure network.
They determine how network packets travel between resources and external networks.

What is a Route Table?

A route table contains rules that specify where traffic should be directed.

Each rule typically includes:
• Destination CIDR block
• Target gateway
Why Route Tables Matter

Route tables enable:
• Internet connectivity
• Communication between subnets
• Secure network architecture

Conclusion

Understanding route tables is essential for designing efficient network architectures in OCI.

Security Lists vs Network Security Groups in OCI

Jeremiah — Mon, 09 Mar 2026 00:52:57 +0000

Introduction

Security is a critical component of any cloud deployment. **Oracle Cloud Infrastructure provides multiple tools for controlling network traffic.

Two key security mechanisms are:
• Security Lists
• Network Security Groups (NSGs)

Security Lists

Security lists apply firewall rules at the subnet level.

Network Security Groups

NSGs apply security rules at the resource level.

This allows engineers to apply more granular control to specific compute instances.

When to Use Each

Security lists are useful for subnet-wide rules, while NSGs are better for application-specific security policies.

Conclusion

Using both security lists and NSGs together provides strong security controls in OCI environments.

Understanding Subnets in Oracle Cloud Infrastructure

Jeremiah — Mon, 09 Mar 2026 00:50:51 +0000

Introduction

Subnets are an important part of network architecture in Oracle Cloud Infrastructure. They help organize resources and improve security by separating workloads.

What is a Subnet?

A subnet is a logical division within a Virtual Cloud Network.

Subnets allow organizations to separate different types of services, such as:
• Web servers
• Application servers
• Databases

Benefits of Using Subnets

Using subnets provides:
• Improved security
• Better traffic control
• Organized architecture

Conclusion
Proper subnet design helps cloud engineers build secure and efficient cloud environments.

How to Create a Virtual Cloud Network in OCI

Jeremiah — Mon, 09 Mar 2026 00:47:48 +0000

Introduction

One of the first steps when deploying resources in Oracle Cloud Infrastructure is creating a Virtual Cloud Network (VCN).

A VCN provides a private networking environment where cloud resources can communicate securely.

Step 1: Open the OCI Console

Navigate to the Networking section in the OCI Console.

Select:

Networking → Virtual Cloud Networks → Create VCN

Step 2: Configure Network Settings

During setup you define:
• Network name
• CIDR block
• Compartment
Step 3: Configure Subnets

OCI allows you to create both:
• Public subnets
• Private subnets

Public subnets allow internet access, while private subnets protect sensitive services like databases.

Conclusion

Creating a VCN is one of the foundational tasks when deploying resources in OCI. It allows you to build secure, scalable network architectures within Oracle’s cloud environment.

Getting Started with Oracle Cloud Infrastructure Networking

Jeremiah — Mon, 09 Mar 2026 00:45:35 +0000

Introduction

Cloud networking is the backbone of any modern cloud architecture. In Oracle Cloud Infrastructure (OCI), networking services allow developers and engineers to securely connect applications, databases, and cloud resources.

This article introduces the core networking concepts within OCI and explains how they work together to create scalable and secure cloud environments.

Core Networking Components

Virtual Cloud Network (VCN)
A VCN is a private network that you define in OCI. It functions similarly to a traditional network in a data center but exists within Oracle’s global cloud infrastructure.

Subnets
Subnets divide the VCN into smaller segments that help organize workloads and improve security.

Route Tables
Route tables determine how traffic flows between subnets and external networks.

Security Lists
Security lists act as firewalls that control inbound and outbound traffic.

Why OCI Networking Matters

OCI networking provides:
• High-performance connectivity
• Secure isolation of resources
• Flexible network design
• Global scalability

Understanding these fundamentals helps cloud engineers design reliable cloud architectures.

Conclusion

OCI networking provides powerful tools that allow developers to design secure, scalable cloud environments. By learning the basics of VCNs, subnets, and routing, engineers can build modern cloud infrastructures with confidence.