Imagine having a tool that can automatically detect if you are using JPA and Hibernate properly. Hypersistence Optimizer is that tool!
High-Performance Hibernate Tutorial
I’ve been using Hibernate for almost a decade and I admit it was not an easy journey. This tutorial is actually a summary of my book, whose main goal is to provide guidelines and practical advice for optimizing the data access layer performance while maintaining a strong consistency transactional model.
This material is useful for both beginners and experienced developers, going beyond the reference documentation.
The best Tutorials on High-Performance Hibernate #Hibernate #Java #Tutorials #NewYearsResolution #Career https://t.co/wQNjz6kK24 pic.twitter.com/4wDmQYvswq
— Java (@java) January 1, 2019
Tips and best practices
- Detect JPA and Hibernate performance issues automatically using Hypersistence Optimizer
- A beginner’s guide to the high-performance-java-persistence GitHub repository
- Hibernate performance tuning tips
- 14 High-Performance Java Persistence tips
- 9 High-Performance Tips when using MySQL with JPA and Hibernate
- 9 High-Performance Tips when using PostgreSQL with JPA and Hibernate
- How to detect the Hibernate N+1 query problem during testing
- A beginner’s guide to SQL injection and how you should prevent it
- How to store date, time, and timestamps in UTC time zone with JDBC and Hibernate
- The fastest way to update a table row when using Hibernate and Oracle
- How to use database-specific or Hibernate-specific features without sacrificing portability
- JPA providers market share
Bootstrapping
- How to bootstrap Hibernate without the
persistence.xmlconfiguration file - How to bootstrap JPA programmatically without the
persistence.xmlconfiguration file - JDBC Driver Connection URL strings
- How to get access to database table metadata with Hibernate 5
- How to get the entity mapping to database table binding metadata from Hibernate
Mappings
Basic types
- A beginner’s guide to Hibernate Types
- A beginner’s guide to JPA and Hibernate Cascade Types
- How to map calculated properties with JPA and Hibernate
@Formulaannotation - How to map calculated properties with Hibernate
@Generatedannotation - How to emulate
@CreatedByand@LastModifiedByfrom Spring Data using the@GeneratorTypeHibernate annotation - How to implement a custom basic type using Hibernate UserType
- What’s new in JPA 2.2 – Java 8 Date and Time Types
- The best way to map a Java 1.8 Optional entity attribute with JPA and Hibernate
- The best way to map an Enum Type with JPA and Hibernate
- How to map a JPA entity to a View or SQL query using Hibernate
- How to map the PostgreSQL inet type with JPA and Hibernate
- How to map a PostgreSQL Range column type with JPA and Hibernate
- How to map the Java YearMonth type with JPA and Hibernate
- How to map
java.time.Yearandjava.time.Monthwith JPA and Hibernate - How to map a PostgreSQL Enum ARRAY to a JPA entity property using Hibernate
- How to escape SQL reserved keywords with JPA and Hibernate
JSON
- The hibernate-types open-source project bring extra Hibernate Types (e.g. JSON, ARRAY)
- How to map JSON objects using generic Hibernate Types
- How to store schema-less EAV (Entity-Attribute-Value) data using JSON and Hibernate
- How to map a String JPA property to a JSON column using Hibernate
- How to map JSON collections using JPA and Hibernate
- How to customize the Jackson ObjectMapper used by Hibernate-Types
- How to customize the JSON Serializer used by Hibernate-Types
- How to fix the Hibernate “No Dialect mapping for JDBC type” issue
ARRAY
Equals and hashCode
- The best way to implement equals, hashCode, and toString with JPA and Hibernate
- How to implement equals and hashCode using the entity identifier (primary key)
- How to implement equals and hashCode using the entity natural identifier
Relationships
- A beginner’s guide to database table relationships
- The best way to map a @OneToOne relationship with JPA and Hibernate
- How to change the @OneToOne shared primary key column name with JPA and Hibernate
- The best way to map a @OneToMany relationship with JPA and Hibernate
- The best way to use the @ManyToMany annotation with JPA and Hibernate
- The best way to map a many-to-many association with extra columns when using JPA and Hibernate
- The best way to map a Composite Primary Key with JPA and Hibernate
- How to map a composite identifier using an automatically @GeneratedValue with JPA and Hibernate
- How to synchronize bidirectional entity associations with JPA and Hibernate
- How to map a @ManyToOne association using a non-Primary Key column
- How to customize an entity association JOIN ON clause with Hibernate
@JoinFormula - How to map a JPA
@ManyToOnerelationship to a SQL query using the Hibernate@JoinFormulaannotation - How to optimize unidirectional collections with JPA and Hibernate
- How do Set and List collections behave with JPA and Hibernate
Advanced mapping techniques
- Fluent API entity building with JPA and Hibernate
- How to map an immutable entity with JPA and Hibernate
- How to map the latest child of a parent entity using Hibernate
@JoinFormula - How to update only a subset of entity attributes using JPA and Hibernate
- How to use external XML mappings files with JPA and Hibernate
- How to encrypt and decrypt data with Hibernate
- The best way to soft delete with Hibernate
- How to fix “wrong column type encountered” schema-validation errors with JPA and Hibernate
- How to audit entity modifications using the JPA
@EntityListeners,@Embedded, and@Embeddableannotations - How to use
@PrePersistand@PreUpdateon Embeddable with JPA and Hibernate - How to map camelCase properties to snake_case column names with Hibernate
Identifiers
- A beginner’s guide to natural and surrogate database keys
- The best way to map a @NaturalId business key with JPA and Hibernate
- The hi/lo algorithm
- Hibernate and UUID identifiers
- How to use a JVM or database auto-generated UUID identifier with JPA and Hibernate
- Hibernate Identity, Sequence, and Table (Sequence) generator
- A beginner’s guide to Hibernate enhanced identifier generators
- Hibernate pooled and pooled-lo identifier generators
- Why you should never use the TABLE identifier generator with JPA and Hibernate
- Why should not use the AUTO JPA GenerationType with MySQL and Hibernate
- How to replace the TABLE identifier generator with either SEQUENCE or IDENTITY in a portable way
- PostgreSQL SERIAL column and Hibernate IDENTITY generator
- How to combine the Hibernate assigned generator with a sequence or an identity column
- How to implement a custom String-based sequence identifier generator with Hibernate
- MariaDB 10.3 supports database sequences
Inheritance
- The best way to use entity inheritance with JPA and Hibernate
- The best way to map the SINGLE_TABLE inheritance with JPA and Hibernate
- The best way to map the @DiscriminatorColumn with JPA and Hibernate
- How to inherit properties from a base class entity using
@MappedSuperclasswith JPA and Hibernate - How to order entity subclasses by their class type using JPA and Hibernate
Connection management
- The simple scalability equation
- The anatomy of Connection Pooling
- Why you should use FlexyPool
- How to monitor your connection pool with FlexyPool
- How to monitor a Java EE DataSource
- Why you should always use hibernate.connection.provider_disables_autocommit for resource-local JPA transactions
- How does aggressive connection release work in Hibernate
Persistence Context
- A beginner’s guide to JPA/Hibernate entity state transitions
- A beginner’s guide to flush strategies in JPA and Hibernate
- How does persist and merge work in JPA
- How do JPA persist, merge and Hibernate save, update, saveOrUpdate work
- How to merge entity collections with JPA and Hibernate
- How does AUTO flush strategy work in Hibernate
- How do JPA and Hibernate define the AUTO flush mode
- A beginner’s guide to Hibernate flush operation order
- The best way to clone or duplicate an entity with JPA and Hibernate
- How to intercept entity changes with Hibernate event listeners
- The anatomy of Hibernate dirty checking mechanism
- How to customize Hibernate dirty checking mechanism
- How to enable bytecode enhancement dirty checking in Hibernate
- How does the bytecode enhancement dirty checking mechanism work in Hibernate 4.3
Fetching
- How do find and getReference EntityManager methods work when using JPA and Hibernate
- A beginner’s guide to Hibernate fetching strategies
- EAGER fetching is a code smell
- The best way to map a projection query to a DTO (Data Transfer Object) with JPA and Hibernate
- The best way to handle the LazyInitializationException
- The best way to lazy load entity attributes using JPA and Hibernate
- The best way to initialize LAZY entity and collection proxies with JPA and Hibernate
- Why you should avoid EXTRA Lazy Collections with Hibernate
- ResultSet statement fetching with JDBC and Hibernate
- How to fetch entities multiple levels deep with Hibernate
- The Open Session In View Anti-Pattern
- The hibernate.enable_lazy_load_no_trans Anti-Pattern
- How does MySQL result set streaming perform vs fetching the whole JDBC ResultSet at once
- How does a JPA Proxy work and how to unproxy it with Hibernate
- The best way to fix the Hibernate “HHH000104: firstResult/maxResults specified with collection fetch; applying in memory!” warning message
Concurrency control
- Data knowledge stack
- A beginner’s guide to ACID and database transactions
- How does MVCC (Multi-Version Concurrency Control) work
- How to get the current database transaction id
- How to log the database transaction id using MDC (Mapped Diagnostic Context)
- How does the entity version property work when using JPA and Hibernate
- How do PostgreSQL advisory locks work
- How to implement a database job queue using SKIP LOCKED
- A beginner’s guide to database locking and the lost update phenomena
- How to prevent lost updates in long conversations
- A beginner’s guide to Dirty Read anomaly
- A beginner’s guide to Non-Repeatable Read anomaly
- A beginner’s guide to Phantom Read anomaly
- A beginner’s guide to read and write skew phenomena
- A beginner’s guide to the Phantom Read anomaly, and how it differs between 2PL and MVCC
- How does database pessimistic locking interact with INSERT, UPDATE, and DELETE SQL statements
- How do UPSERT and MERGE work in Oracle, SQL Server, PostgreSQL and MySQL
- Logical vs physical clock optimistic locking
- How to retry JPA transactions after an OptimisticLockException
- How does Hibernate guarantee application-level repeatable reads
- Hibernate collections optimistic locking
- How to address the OptimisticLockException in JPA and Hibernate
- How to prevent OptimisticLockException with Hibernate versionless optimistic locking
- A beginner’s guide to transaction isolation levels in enterprise Java
- A beginner’s guide to Java Persistence locking
- How does LockModeType.OPTIMISTIC work in JPA and Hibernate
- How to fix optimistic locking race conditions with pessimistic locking
- How does LockModeType.OPTIMISTIC_FORCE_INCREMENT work in JPA and Hibernate
- How does LockModeType.PESSIMISTIC_FORCE_INCREMENT work in JPA and Hibernate
- How do LockModeType.PESSIMISTIC_READ and LockModeType.PESSIMISTIC_WRITE work in JPA and Hibernate
- How does CascadeType.LOCK works in JPA and Hibernate
- How to increment the parent entity version whenever a child entity gets modified with JPA and Hibernate
- Spring read-only transaction Hibernate optimization
Batching
- Batch processing best practices
- The best way to do batch processing with JPA and Hibernate
- How to batch INSERT and UPDATE statements with Hibernate
- How to batch DELETE statements with Hibernate
- How to customize the JDBC batch size for each Persistence Context with Hibernate
- How to find which statement failed in a JDBC Batch Update
- How to optimize the merge operation using update while batching with JPA and Hibernate
- How to enable multi-row inserts with the PostgreSQL reWriteBatchedInserts configuration property
Queries
- How does a relational database execute SQL statements and prepared statements
- How to improve statement caching efficiency with IN clause parameter padding
- A beginner’s guide to the Hibernate JPQL and Native Query Plan Cache
- How to optimize JPQL and Criteria API query plans with Hibernate Statistics
- The best way to use the JPQL DISTINCT keyword with JPA and Hibernate
- How to JOIN unrelated entities with JPA and Hibernate
- How to resolve the Hibernate global database schema and catalog for native SQL queries
- How to map table rows to columns using SQL PIVOT or CASE expressions
- The JPA EntityManager createNativeQuery is a Magic Wand
- Why you should use the Hibernate ResultTransformer to customize result set mappings
- Why you should definitely learn SQL Window Functions
- Query pagination with JPA and Hibernate
- What’s new in JPA 2.2 – Stream the result of a Query execution
- How to get the actual execution plan for an Oracle SQL query using Hibernate query hints
- How to solve the PostgreSQL :: cast operator issue with JPA and Hibernate
- The best way to use SQL functions in JPQL or Criteria API queries with JPA and Hibernate
- How to execute SQL functions with multiple parameters in a JPQL query with Hibernate
- How to query parent rows when all children must match the filtering criteria with SQL and Hibernate
- How to bind custom Hibernate parameter types to JPA queries
Criteria Queries
- JPA Criteria API Bulk Update and Delete
- How to query by entity type using JPA Criteria API
- Why you should always check the SQL statements generated by Criteria API
- The performance penalty of Class.forName when parsing JPQL and Criteria queries
- How does Hibernate handle JPA Criteria API literals
Stored procedures
- The best way to call a stored procedure with JPA and Hibernate
- How to call Oracle stored procedures and functions with JPA and Hibernate
- How to call SQL Server stored procedures and functions with JPA and Hibernate
- How to call PostgreSQL functions (stored procedures) with JPA and Hibernate
- How to call MySQL stored procedures and functions with JPA and Hibernate
Caching
- A beginner’s guide to Cache synchronization strategies
- Things to consider before jumping to enterprise caching
- Caching best practices
- How does Hibernate store second-level cache entries
- How does Hibernate READ_ONLY CacheConcurrencyStrategy work
- How does Hibernate NONSTRICT_READ_WRITE CacheConcurrencyStrategy work
- How does Hibernate READ_WRITE CacheConcurrencyStrategy work
- How does Hibernate TRANSACTIONAL CacheConcurrencyStrategy work
- How does Hibernate Collection Cache work
- How does Hibernate Query Cache work
- How to use the Hibernate Query Cache for DTO projections
- How to avoid the Hibernate Query Cache N+1 issue
- How to cache non-existing entity fetch results with JPA and Hibernate
Audit
- A beginner’s guide to CDC (Change Data Capture)
- How to extract change data events from MySQL to Kafka using Debezium
- The best way to implement an audit log using Hibernate Envers
Multitenancy
- A beginner’s guide to database multitenancy
- Hibernate database catalog multitenancy
- Hibernate database schema multitenancy
Testing
- The minimal configuration for testing Hibernate
- Hibernate integration testing strategies
- How to run database integration tests 20 times faster
- How to run integration tests at warp speed using Docker and tmpfs
- The best way to log JDBC statements
- The best way to detect database connection leaks
- How to install DB2 Express-C on Docker and set up the JDBC connection properties
- How to get started with CockroachDB and Hibernate
If you enjoyed this article, I bet you are going to love my Book and Video Courses as well.
Download free ebook sample
10 000 readers have found this blog worth following!
If you subscribe to my newsletter, you'll get:
If you subscribe to my newsletter, you'll get:
- A free sample of my Video Course about running Integration tests at warp-speed using Docker and tmpfs
- 3 chapters from my book, High-Performance Java Persistence,
- a 10% discount coupon for my book.
