MindMap Gallery Database Performance Tuning Diagram
Unlock the full potential of your database with our comprehensive guide on Database Performance Tuning. This detailed framework covers essential aspects, including Goals & Metrics to measure response time and resource usage, Observability & Diagnosis techniques to isolate bottlenecks, and effective Query Optimization strategies for better performance. Explore Index Optimization for efficient data retrieval, Configuration Tuning to enhance system settings, and Schema & Data Model Improvements to streamline data structures. Additionally, learn about Transaction & Lock Tuning for minimizing contention and Caching & Read Scalability to boost application efficiency. Elevate your database performance and ensure stability with proven tuning practices.
Edited at 2026-03-25 13:45:00Join us in learning the art of applause! This engaging program for Grade 3 students focuses on the appropriate times to applaud during assemblies and performances, emphasizing respect and appreciation for performers. Students will explore the significance of applauding, from encouraging speakers to maintaining good audience manners. They will learn when to applaudsuch as after performances or when speakers are introducedand when to refrain from clapping, ensuring they don't interrupt quiet moments or ongoing performances. Through fun activities like the "Applause or Pause" game and role-playing a mini assembly, students will practice respectful applause techniques. Success will be measured by their ability to clap at the right times, demonstrate respect during quiet moments, and support their peers kindly. Let's foster a community of respectful audience members together!
In our Grade 4 lesson on caring for classmates who feel unwell, we equip students with essential skills for handling such situations compassionately and effectively. The lesson unfolds in seven stages, starting with daily preparedness, where students learn to recognize signs of illness and the importance of communicating with adults. Next, they practice checking in with a classmate politely and keeping them comfortable. Students are then guided to inform the teacher promptly and offer safe help while waiting. In case of serious symptoms, they learn to seek adult assistance immediately. After the situation is handled, students reflect on their actions and continue improving their response skills for future incidents. This comprehensive approach fosters empathy and responsibility in our classroom community.
Join us in Grade 2 as we explore the important topic of keeping friends' secrets! In this engaging session, students will learn what a secret is, how to distinguish between safe and unsafe secrets, and identify trusted adults they can turn to for help. We’ll discuss the difference between surprises, which are short-lived and joyful, and secrets that can sometimes cause worry. Through interactive activities like sorting games and role-playing, children will practice recognizing unsafe situations and the importance of sharing concerns with adults. Remember, safety is always more important than secrecy!
Join us in learning the art of applause! This engaging program for Grade 3 students focuses on the appropriate times to applaud during assemblies and performances, emphasizing respect and appreciation for performers. Students will explore the significance of applauding, from encouraging speakers to maintaining good audience manners. They will learn when to applaudsuch as after performances or when speakers are introducedand when to refrain from clapping, ensuring they don't interrupt quiet moments or ongoing performances. Through fun activities like the "Applause or Pause" game and role-playing a mini assembly, students will practice respectful applause techniques. Success will be measured by their ability to clap at the right times, demonstrate respect during quiet moments, and support their peers kindly. Let's foster a community of respectful audience members together!
In our Grade 4 lesson on caring for classmates who feel unwell, we equip students with essential skills for handling such situations compassionately and effectively. The lesson unfolds in seven stages, starting with daily preparedness, where students learn to recognize signs of illness and the importance of communicating with adults. Next, they practice checking in with a classmate politely and keeping them comfortable. Students are then guided to inform the teacher promptly and offer safe help while waiting. In case of serious symptoms, they learn to seek adult assistance immediately. After the situation is handled, students reflect on their actions and continue improving their response skills for future incidents. This comprehensive approach fosters empathy and responsibility in our classroom community.
Join us in Grade 2 as we explore the important topic of keeping friends' secrets! In this engaging session, students will learn what a secret is, how to distinguish between safe and unsafe secrets, and identify trusted adults they can turn to for help. We’ll discuss the difference between surprises, which are short-lived and joyful, and secrets that can sometimes cause worry. Through interactive activities like sorting games and role-playing, children will practice recognizing unsafe situations and the importance of sharing concerns with adults. Remember, safety is always more important than secrecy!
Database Performance Tuning Diagram
Goals & Metrics
Response time (latency)
Throughput (TPS/QPS)
Concurrency & lock waits
Resource usage (CPU, memory, I/O, network)
Stability (variance, tail latency p95/p99)
Observability & Diagnosis
Baseline & workload characterization
Peak vs off-peak patterns
Read/write ratio, hot tables/rows
Monitoring & instrumentation
Slow query log / statement tracking
Execution plans (EXPLAIN/ANALYZE)
Wait events (locks, I/O, CPU)
Buffer/cache hit ratios
Bottleneck isolation
CPU-bound vs I/O-bound vs lock-bound
Storage latency and throughput checks
Query Optimization
Query rewriting
Select only needed columns (avoid SELECT *)
Reduce row scans with better predicates
Avoid functions on indexed columns (non-sargable)
Replace correlated subqueries with joins/CTEs when beneficial
Join & aggregation optimization
Correct join order and join types
Pre-aggregate when possible
Use LIMIT/OFFSET carefully (keyset pagination)
Execution plan tuning
Ensure statistics are up to date
Validate index usage and row estimates
Detect full table scans and expensive sorts
Batch & application patterns
Use prepared statements / parameterization
Avoid N+1 queries
Control transaction size and frequency
Index Optimization
Index selection
Index columns used in WHERE, JOIN, ORDER BY, GROUP BY
Composite indexes (leftmost prefix rules)
Covering indexes to reduce table lookups
Index quality
Remove redundant/unused indexes
Balance read benefits vs write overhead
Avoid over-indexing high-churn tables
Maintenance
Rebuild/reorganize to reduce fragmentation (engine-dependent)
Update statistics / analyze tables
Consider partial/filtered indexes for selective predicates
Specialized indexing
Full-text indexes for text search
Spatial indexes for geodata
Hash vs B-tree considerations (engine-specific)
Configuration Tuning
Memory & caching
Buffer pool / shared buffers sizing
Work memory / sort memory configuration
Connection/thread memory overhead control
Concurrency & connections
Connection pooling
Thread/worker settings
Max connections vs throughput trade-off
Storage & I/O settings
WAL/redo log sizing and checkpoints
I/O scheduler / async I/O options
Datafile placement, RAID/SSD/NVMe choices
Optimizer & engine parameters
Cost model settings (where applicable)
Parallelism settings for queries and maintenance
Schema & Data Model Improvements
Normalization vs denormalization
Reduce joins vs avoid duplication issues
Partitioning
Range/hash/list partitioning by time or key
Partition pruning for faster scans
Data types & constraints
Use appropriate data types (smaller/fixed where suitable)
Constraints and indexes aligned with access patterns
Archiving & retention
Purge old data, move cold data to cheaper storage
Transaction & Lock Tuning
Isolation levels
Choose lowest safe isolation to reduce contention
Lock contention reduction
Short transactions, avoid user think-time in transactions
Consistent access order to reduce deadlocks
Hotspot mitigation
Shard hot keys, add caching, redesign sequences/counters
Caching & Read Scalability
Application caching
Cache-aside / write-through strategies
TTL, invalidation, cache stampede protection
Database-side caching
Materialized views / result caching (if available)
Replication for reads
Read replicas, load balancing
Handle replication lag and read-after-write needs
Maintenance & Continuous Improvement
Regular routines
VACUUM/ANALYZE (where applicable)
Index maintenance and statistics refresh
Regression prevention
Query performance tests in CI
Plan stability monitoring
Change management
Measure before/after, rollback plans
Capacity planning and periodic re-baselining