Learn OceanBase @LearnOceanBase
A resource for developers and sys-admins using #OceanBase database. Maintained by Neeerd - a passionate user of OceanBase | Opinions my own. Joined May 2022-
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BoCom migration dramatically reduced total cost of ownership per account post-migration. Distributed architecture supports business growth for the next decade. #CloudNative #OceanBase
Bank of Communications credit card system ranked near top ten globally. Trillions in transaction volume means even the slightest error was unaffordable during core cutover. #FinTech #OceanBase
Enterprise-wide access control rooted in the database resolves security concerns for AI querying. Security frameworks must evolve alongside semantic layers. #DataSecurity #OceanBase
External models grow powerful but lack domain business logic. That logic resides exclusively within an enterprise's proprietary data. Models without data context hallucinate. #LLM #OceanBase
Autonomous AI agents are the primary consumers of data now, not humans. Infrastructure built for human queries won't unlock real-world productivity for agentic workflows. #AgenticAI #OceanBase
Query response accuracy surged from 70% to 98% by introducing a semantic layer between data and user. Manual metric dictionaries can't match semi-autonomous LLM construction. #DataEngineering #OceanBase
"Check last week's loans" means different things to a bank president vs a frontline officer. Conventional Text-to-SQL fails on this nuance. Context-aware semantic layers are required for precision. #AI #OceanBase
Replacing core banking systems is like performing brain surgery while running a marathon. 70% of mainframe down-migration projects globally fail to meet expectations due to sheer business complexity. #BankingTech #OceanBase
Legacy architectures scale vertically—buying bigger mainframes until physical limits hit. Horizontal stacking handles unexpected spikes without staggering risk costs. How distributed SQL solves this: #DistributedSQL #OceanBase en.oceanbase.com/blog/data-matt…
OCP acts as the control plane for the environment. Manage clusters & tenants in one place for centralized monitoring & auditing. #DevOps #CloudNative #OceanBase
Physical separation is no longer the only way to guarantee SLA. Logical isolation w/ enforced quotas can match dedicated hardware reliability. #SRE #Database #OceanBase
Regulators require clear separation between core & peripheral systems. Tenant isolation provides the audit trails & boundaries needed for compliance. #Compliance #Fintech #OceanBase
A marketing batch job shouldn't spike latency on the payment path. Tenant-level quotas prevent cross-system interference in shared clusters. #Fintech #Database #OceanBase
Network threads are shared across tenants. Transparency on limits matters: not every resource is isolated, so plan network bandwidth accordingly. #Architecture #CloudNative #OceanBase
`large_query_worker_percentage` defaults to 30%. This caps the share of worker threads long-running queries can occupy, protecting short transactions. #Database #Performance #OceanBase
cgroup-based isolation for CPU & IOPS requires Linux kernel 4.19+. Kernel version matters when enforcing tenant boundaries at the OS level. #DevOps #SRE #OceanBase
Memory cannot be over-committed since V4.0.0. This hard constraint ensures stability over density. No swapping surprises during peak load. #CloudNative #Database #OceanBase
Resource specs change live. `ALTER RESOURCE UNIT` takes effect immediately—no data migration or restart. Scale workloads during peak w/o downtime. How handles dynamic scaling: #DistributedSQL #Database #OceanBase en.oceanbase.com/blog/one-datab…
The database is becoming more than the data foundation underneath AI. It is turning into the engine that helps AI reason over data correctly. Storage is evolving into reasoning support. #DistributedSQL #CloudNative #OceanBase
Common errors include computing from a partial population or using the wrong counting unit. Targeted checks of joins, time filters, & ranking boundaries catch these before they distort aggregates. Verification must be specific. #OceanBase
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