Calculation of SLA for complex IT systems with guaranteed accuracy
Get a mathematically accurate calculation of your system's availability, bottleneck analysis, and improvement recommendations from an expert with 13 years of experience in major projects.
Order
100%
Accuracy
13 years
Expert experience
11+
Projects
Your system may be vulnerable, even if you don't know it.
  • Non-compliance of SLA with actual availability
    You promise customers 99.9%, but the actual availability of the system is only 97.5%.
  • Hidden architectural bottlenecks
    One component with 99% availability reduces the overall SLA of a complex system to 95%, even with the remaining components by 99.99%.
  • Incorrect metrics
    Errors and the use of simplified formulas instead of precise mathematical models for parallel and sequential systems.
Incorrect calculation of the SLA leads to financial losses, reputational risks, and unexpected downtime.
Who will calculate the SLA
SLA and Highload Systems Expert Profile
Egor Litvinenko

Egor Litvinenko

Developer and Architect of Highload Systems.

13+ years of experience in developing and designing systems with SLA requirements.

I will conduct SLA calculation and audit for business-critical applications.

I will help turn availability requirements into a working architecture.

SLA Audit & Calculation
HSE University Lecturer
Fault Tolerance
Performance Engineering
HighLoad

Key Projects with SLA Metrics

  • AI Data Preparation Component (Fortune 100)

    Development of an AI data preparation component for an advertising budget optimization system for Top-100 Fortune. Creating static checks for uploaded data, optimizing processing workflows.

    SLA: 99.9% Availability
    Less than 9 hours of downtime per year
    Performance Optimization
    Data Validation
    AI pipeline
    Data Quality SLA Java,Closure,Python,R Apache Spark Pandas
  • RTB System for Mobile Games

    Development and maintenance of a Real-Time Bidding system for advertising auctions. Partner integration components, latency and CPU optimization. The system handles millions of requests daily with strict SLA requirements.

    Response <100ms (p99)
    99th percentile response time
    SLA: 99.99% Availability
    Less than 53 minutes of downtime per year
    RPO = 0
    Zero data loss
    High Availability Java,Go Cassandra Clickhouse Kafka
  • Yandex Infrastructure Monitoring System

    Creation of a Change Data Capture system with fast change delivery time. Architectural and code optimizations for real-time streaming data processing. Performance improvement and latency reduction.

    SLA: 99.95% Availability
    Less than 4.4 hours of downtime per year
    Latency <5ms
    CDC system
    Configuration management Java Yandex Database
  • Electronic Document Management at "Magnit"

    Development of an electronic document management and automatic order forecasting system for the largest retail chain. Integration with existing ERP system, process optimization.

    SLA: 99.9% Availability
    Forecasting
    Document Management
    ERP Integration
    Business Continuity Java Spring PostgreSQL

Expertise & Technologies

SLA & Reliability Expertise

I help businesses formalize availability and performance requirements, translate them into architecture and metrics language. Calculate realistic SLAs and build systems that meet them.

SLA / SLO Calculation
Service Level Objectives
Monitoring & Metrics
SLA-Focused Architecture
Availability (99.9%+) RTO / RPO Load Testing Capacity Planning Chaos Engineering
Backend Development

Expertise in 8+ programming languages. Selecting the optimal stack for business tasks considering SLA requirements.

Java Go Python Rust C++ C# TypeScript
Architecture & Infrastructure

Designing systems with consideration for fault tolerance, performance, and scalability requirements. Ensuring SLA compliance at all levels.

HighLoad
Fault-tolerance
Microservices
High Availability Rollback Strategy Disaster Recovery Change Management Data LifeCycle Management SRE Capacity Planning Performance Testing
Training & Mentorship

Teaching industrial programming at HSE University. Mentoring students from leading technical universities.

HSE University
ITMO University
MIPT
Architecture Code Review System Design SLA Best Practices

SLA Work Methodology

1. Requirements Analysis

Identifying business-critical scenarios, formalizing target metrics (Availability, Latency, Throughput, RTO/RPO). Defining realistic SLA goals based on business needs.

2. Architecture Audit

Identifying single points of failure risks, bottlenecks, redundancy, and monitoring. Analyzing current metrics and compliance with stated SLAs.

3. Calculation & Plan

Calculating realistic SLA, developing a roadmap for system reliability improvement. Assessing the cost of providing different SLA levels.

4. Team Training

Training your team on SLA principles, working with metrics and monitoring tools for independent maintenance and improvement of system availability.

5. Implementation & Control

If needed, developing and implementing a solution to ensure SLA, setting up monitoring and alerting. Load testing and Chaos Engineering to verify fault tolerance.

Why should you order from me?
  • Openness
    You get an honest and objective assessment of the situation without fear or internal constraints.
  • Independence
    Freedom from internal involvement allows for unbiased, result-oriented decisions.
  • Viewing experience
    Experience in various fields and projects allows you to find non-obvious solutions and offer a fresh, effective approach.