| --- |
| title: "Apache Ignite Architecture Series: Part 1 - When Multi-System Complexity Compounds at Scale" |
| author: "Michael Aglietti" |
| date: 2025-11-25 |
| tags: |
| - apache |
| - ignite |
| --- |
| |
| p Apache Ignite shows what really happens once your #[em good enough] multi-system setup starts cracking under high-volume load. This piece breaks down why the old stack stalls at scale and how a unified, memory-first architecture removes the latency tax entirely. |
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| <!-- end --> |
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| p Your high-velocity application started with smart architectural choices. PostgreSQL for reliable transactions, Redis for fast cache access, custom processing for specific business logic. These decisions enabled initial success and growth. |
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| p But success changes the game. Your application now processes thousands of events per second and customers expect microsecond response times. Real-time insights drive competitive advantage. The same architectural choices that enabled growth now create performance bottlenecks that compound with every additional event. |
| |
| p. |
| #[strong At high event volumes, data movement between systems becomes the primary performance constraint]. |
| |
| hr |
| |
| h3 The Scale Reality for High-Velocity Applications |
| |
| p As event volume grows, architectural compromises that once seemed reasonable at lower scale become critical bottlenecks. Consider a financial trading platform, gaming backend, or IoT processor handling tens of thousands of operations per second. |
| |
| h3 Event Processing Under Pressure |
| |
| p #[strong High-frequency event characteristics] |
| ul |
| li Events arrive faster than traditional batch processing can handle |
| li Each event requires immediate consistency checks against live data |
| li Results must update multiple downstream systems simultaneously |
| li Network delays compound into user-visible lag |
| li #[strong Traffic spikes create systemic pressure] — traditional stacks drop connections or crash when overwhelmed |
| |
| p #[strong The compounding effect] |
| ul |
| li At 100 events per second, network latency of 2ms adds minimal overhead. |
| li At 10,000 events per second, that same 2ms latency creates a 20-second processing backlog within system boundaries. |
| li During traffic spikes (50,000+ events per second), traditional systems collapse entirely, dropping connections and losing data when they're needed most. |
| p The math scales against you. |
| |
| hr |
| |
| h3 When Smart Choices Become Scaling Limits |
| |
| p #[strong Initial Architecture, works great at lower scale:] |
| |
| pre.mermaid. |
| flowchart TB |
| subgraph "Event Processing" |
| Events[High-Volume Events<br/>10,000/sec] |
| end |
| |
| subgraph "Multi-System Architecture" |
| Redis[(Cache<br/>Session Data<br/>2ms latency)] |
| PostgreSQL[(Relational DB<br/>Transaction Data<br/>5ms latency)] |
| Processing[Custom Processing<br/>Business Logic<br/>3ms latency] |
| end |
| |
| Events --> Redis |
| Events --> PostgreSQL |
| Events --> Processing |
| |
| Redis <-->|Sync Overhead| PostgreSQL |
| PostgreSQL <-->|Data Movement| Processing |
| Processing <-->|Cache Updates| Redis |
| |
| p #[strong What happens at scale] |
| ul |
| li #[strong Network-latency tax:] Every system hop adds milliseconds that compound |
| li #[strong Synchronization delays:] Keeping systems consistent creates processing queues |
| li #[strong Memory overhead:] Each system caches the same data in different formats |
| li #[strong Consistency windows:] Brief periods where systems show different data states |
| |
| hr |
| |
| h3 The Hidden Cost of Multi-System Success |
| |
| p #[strong Data Movement Overhead:] |
| |
| p Your events don't just need processing, they need processing that maintains consistency across all systems. |
| |
| p Each event triggers: |
| ul |
| li #[strong Cache lookup (Redis):] ≈ 0.5 ms network + processing |
| li #[strong Transaction validation (PostgreSQL):] ≈ 2 ms network + disk I/O |
| li #[strong Business-logic execution (Custom):] ≈ 1ms processing + data marshalling |
| li #[strong Result synchronization (across systems):] ≈ 3 ms coordination overhead |
| |
| p #[strong Minimum per-event cost ≈ 7 ms before business logic.] |
| p At 10,000 events/s, you’d need 70 seconds of processing capacity just #[strong for data movement] per real-time second! |
| |
| hr |
| |
| h3 The Performance Gap That Grows With Success |
| |
| h3 Why Traditional Options Fail |
| |
| p #[strong Option 1: Scale out each system] |
| ul |
| li #[strong Strategy]: Add cache clusters, database replicas, processing nodes |
| li #[strong Result]: More systems to coordinate, exponentially more complexity |
| li #[strong Reality]: Network overhead grows faster than processing capacity |
| |
| p #[strong Option 2: Custom optimization] |
| ul |
| li #[strong Strategy]: Build application-layer caching, custom consistency protocols |
| li #[strong Result]: Engineering team maintains complex, system-specific optimizations |
| li #[strong Reality]: Solutions don't generalize; each optimization creates technical debt |
| |
| p #[strong Option 3: Accept compromises] |
| ul |
| li #[strong Strategy]: Use async processing, eventual consistency, and accept delayed insights |
| li #[strong Result]: Business requirements compromised to fit architectural limitations |
| li #[strong Reality]: Competitive disadvantage as customer expectations grow |
| |
| hr |
| |
| h3 The Critical Performance Gap |
| |
| table(style="borderlicollapse: collapse; margin: 20px 0; width: 100%;") |
| thead |
| tr |
| th(style="border: 1px solid #ddd; padding: 12px; background-color: #f5f5f5; text-align: left;") Component |
| th(style="border: 1px solid #ddd; padding: 12px; background-color: #f5f5f5; text-align: left;") Optimized for |
| th(style="border: 1px solid #ddd; padding: 12px; background-color: #f5f5f5; text-align: left;") Typical Latency |
| tbody |
| tr |
| td(style="border: 1px solid #ddd; padding: 12px;") Database |
| td(style="border: 1px solid #ddd; padding: 12px;") ACID transactions |
| td(style="border: 1px solid #ddd; padding: 12px;") Milliseconds |
| tr |
| td(style="border: 1px solid #ddd; padding: 12px;") Cache |
| td(style="border: 1px solid #ddd; padding: 12px;") Access speed |
| td(style="border: 1px solid #ddd; padding: 12px;") Microseconds |
| tr |
| td(style="border: 1px solid #ddd; padding: 12px;") Compute |
| td(style="border: 1px solid #ddd; padding: 12px;") Throughput |
| td(style="border: 1px solid #ddd; padding: 12px;") Minutes – hours |
| |
| |
| p Applications needing #[strong microsecond insights] on #[strong millisecond transactions] have no good options at scale in traditional architectures. |
| |
| p During traffic spikes, traditional architectures either drop connections (data loss) or degrade performance (missed SLAs). High-velocity applications need intelligent flow control that guarantees stability under pressure while preserving data integrity. |
| |
| hr |
| |
| h3 Event Processing at Scale |
| |
| p #[strong Here's what traditional multi-system event processing costs:] |
| |
| pre |
| code. |
| // Traditional multi-system event processing |
| long startTime = System.nanoTime(); |
| |
| // 1. Cache lookup for session data |
| String sessionData = redisClient.get("session:" + eventId); // ~500μs network |
| if (sessionData == null) { |
| sessionData = postgresDB.query("SELECT * FROM sessions WHERE id = ?", eventId); // ~2ms fallback |
| redisClient.setex("session:" + eventId, 300, sessionData); // ~300μs cache update |
| } |
| |
| // 2. Transaction processing |
| postgresDB.executeTransaction(tx -> { // ~2-5ms transaction |
| tx.execute("INSERT INTO events VALUES (?, ?, ?)", eventId, userId, eventData); |
| tx.execute("UPDATE user_stats SET event_count = event_count + 1 WHERE user_id = ?", userId); |
| }); |
| |
| // 3. Custom processing with consistency coordination |
| ProcessingResult result = customProcessor.process(eventData, sessionData); // ~1ms processing |
| redisClient.setex("result:" + eventId, 600, result); // ~300μs result caching |
| |
| // 4. Synchronization across systems |
| ensureConsistency(eventId, sessionData, result); // ~2-3ms coordination |
| |
| long totalTime = System.nanoTime() - startTime; |
| // Total: 6-12ms per event (not including queuing delays) |
| |
| |
| p #[strong Compound Effect at Scale:] |
| |
| table(style="border-collapse: collapse; margin: 20px 0; width: 100%;") |
| thead |
| tr |
| th(style="border: 1px solid #ddd; padding: 12px; background-color: #f5f5f5; text-align: left;") Rate |
| th(style="border: 1px solid #ddd; padding: 12px; background-color: #f5f5f5; text-align: left;") Required processing time / s |
| tbody |
| tr |
| td(style="border: 1px solid #ddd; padding: 12px;") 1,000 events / s |
| td(style="border: 1px solid #ddd; padding: 12px;") 6–12 s |
| tr |
| td(style="border: 1px solid #ddd; padding: 12px;") 5,000 events / s |
| td(style="border: 1px solid #ddd; padding: 12px;") 30–60 s |
| tr |
| td(style="border: 1px solid #ddd; padding: 12px;") 10,000 events / s |
| td(style="border: 1px solid #ddd; padding: 12px;") 60–120 s |
| |
| p #[strong The math doesn’t work:] parallelism helps, but coordination overhead grows exponentially with system count. |
| |
| hr |
| |
| h3 Real-World Breaking Points |
| ul |
| li #[strong Financial services]: Trading platforms hitting 10,000+ trades/second discover that compliance reporting delays impact trading decisions. |
| li #[strong Gaming platforms]: Multiplayer backends processing user actions find that leaderboard updates lag behind gameplay events. |
| li #[strong IoT analytics]: Manufacturing systems processing sensor data realize that anomaly detection arrives too late for preventive action. |
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| hr |
| |
| h3 The Apache Ignite Alternative |
| |
| h3 Eliminating Multi-System Overhead |
| |
| pre.mermaid. |
| flowchart TB |
| subgraph "Event Processing" |
| Events[High-Volume Events<br/>10,000/sec] |
| end |
| |
| subgraph "Apache Ignite Platform" |
| subgraph "Collocated Processing" |
| Memory[Memory-First Storage<br/>Optimized Access Times] |
| Transactions[MVCC Transactions<br/>ACID Guarantees] |
| Compute[Event Processing<br/>Where Data Lives] |
| end |
| end |
| |
| Events --> Memory |
| Memory --> Transactions |
| Transactions --> Compute |
| |
| Memory <-->|Minimal Copying| Transactions |
| Transactions <-->|Collocated| Compute |
| Compute <-->|Direct Access| Memory |
| |
| p #[strong Key difference:] events process #[strong where the data lives], eliminating inter-system latency. |
| |
| hr |
| |
| h3 Apache Ignite Performance Reality Check |
| |
| p #[strong Here's the same event processing with integrated architecture:] |
| |
| pre |
| code. |
| // Apache Ignite integrated event processing |
| try (IgniteClient client = IgniteClient.builder().addresses("cluster:10800").build()) { |
| // Single integrated transaction spanning cache, database, and compute |
| client.transactions().runInTransaction(tx -> { |
| // 1. Access session data (in memory, no network overhead) |
| Session session = client.tables().table("sessions") |
| .keyValueView().get(tx, Tuple.create().set("id", eventId)); |
| |
| // 2. Process event with ACID guarantees (same memory space) |
| client.sql().execute(tx, "INSERT INTO events VALUES (?, ?, ?)", |
| eventId, userId, eventData); |
| |
| // 3. Execute processing collocated with data |
| ProcessingResult result = client.compute().execute( |
| JobTarget.colocated("events", Tuple.create().set("id", eventId)), |
| EventProcessor.class, eventData); |
| |
| // 4. Update derived data (same transaction, guaranteed consistency) |
| client.sql().execute(tx, "UPDATE user_stats SET event_count = event_count + 1 WHERE user_id = ?", userId); |
| |
| return result; |
| }); |
| } |
| // Result: microsecond-range event processing through integrated architecture |
| |
| p Processing 10,000 events/s is achievable with integrated architecture eliminating network overhead. |
| |
| hr |
| |
| h3 The Unified Data-Access Advantage |
| |
| p #[strong Here's what eliminates the need for separate systems:] |
| |
| pre |
| code. |
| // The SAME data, THREE access paradigms, ONE system |
| Table customerTable = client.tables().table("customers"); |
| |
| // 1. Key-value access for cache-like performance |
| Customer customer = customerTable.keyValueView() |
| .get(tx, Tuple.create().set("customer_id", customerId)); |
| |
| // 2. SQL access for complex analytics |
| ResultSet<SqlRow> analytics = client.sql().execute(tx, |
| "SELECT segment, AVG(order_value) FROM customers WHERE region = ?", region); |
| |
| // 3. Record access for type-safe operations |
| CustomerRecord record = customerTable.recordView() |
| .get(tx, new CustomerRecord(customerId)); |
| |
| // All three: same schema, same data, same transaction model |
| |
| p #[strong Eliminates:] |
| ul |
| li #[strong Cache API] for cache operations |
| li Data movement during #[strong distributed joins] for analytical queries |
| li #[strong Custom mapping logic] for type-safe access |
| li #[strong Data synchronization] between cache and database |
| li #[strong Schema drift risks] across different systems |
| |
| p #[strong Unified advantage:] One schema, one transaction model, multiple access paths. |
| |
| hr |
| |
| h3 Apache Ignite Architecture Preview |
| |
| p The ability to handle high-velocity events without multi-system overhead requires specific technical innovations: |
| ul |
| li #[strong Memory-first storage]: Event data lives in memory with optimized access times typically under 10 microseconds for cache-resident data |
| li #[strong Collocated compute]: Processing happens where data already exists, eliminating movement |
| li #[strong Integrated transactions]: ACID guarantees span cache, database, and compute operations |
| li #[strong Minimal data copying]: Events process against live data through collocated processing and direct memory access |
| |
| p These innovations address the compound effects that make multi-system architectures unsuitable for high-velocity applications. |
| |
| hr |
| |
| h3 Business Impact of Architectural Evolution |
| |
| h3 Cost Efficiency |
| ul |
| li #[strong Reduced infrastructure]: one platform instead of several |
| li #[strong Lower network costs]: eliminate inter-system bandwidth overhead |
| li #[strong Simplified operations]: fewer platforms to monitor, backup, and scale |
| |
| h3 Performance Gains |
| ul |
| li #[strong Microsecond latency]: eliminates network overhead |
| li #[strong Higher throughput]: more events on existing hardware |
| li #[strong Predictable scaling]: consistent performance under load |
| |
| h3 Developer Experience |
| ul |
| li #[strong Single API]: one model for all data operations |
| li #[strong Consistent behavior]: no synchronization anomalies |
| li #[strong Faster delivery]: one integrated system to test and debug |
| |
| hr |
| |
| h3 The Architectural Evolution Decision |
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| p Every successful application reaches this point: the architecture that once fueled growth now constrains it. |
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| p #[strong The question isn't whether you'll hit multi-system scaling limits. It's how you'll evolve past them.] |
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| p #[strong Apache Ignite] consolidates transactions, caching, and compute into a single, memory-first platform designed for high-velocity workloads. Instead of managing the compound complexity of coordinating multiple systems at scale, you consolidate core operations into a platform designed for high-velocity applications. |
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| p Your winning architecture doesn't have to become your scaling limit. It can evolve into the foundation for your next phase of growth. |
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| hr |
| br |
| | |
| p #[em Return next Tuesday for Part 2, where we examine how Apache Ignite’s memory-first architecture enables optimized event processing while maintaining durability, forming the basis for true high-velocity performance.] |
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