Clinton Gormley, Zachary Tong - Elasticsearch: The Definitive Guide [2015, ePub, ENG]

Getting Started
Chapter 1 You Know, for Search…
Installing Elasticsearch
Running Elasticsearch
Talking to Elasticsearch
Document Oriented
Finding Your Feet
Indexing Employee Documents
Retrieving a Document
Search Lite
Search with Query DSL
More-Complicated Searches
Full-Text Search
Phrase Search
Highlighting Our Searches
Analytics
Tutorial Conclusion
Distributed Nature
Next Steps
Chapter 2 Life Inside a Cluster
An Empty Cluster
Cluster Health
Add an Index
Add Failover
Scale Horizontally
Coping with Failure
Chapter 3 Data In, Data Out
What Is a Document?
Document Metadata
Indexing a Document
Retrieving a Document
Checking Whether a Document Exists
Updating a Whole Document
Creating a New Document
Deleting a Document
Dealing with Conflicts
Optimistic Concurrency Control
Partial Updates to Documents
Retrieving Multiple Documents
Cheaper in Bulk
Chapter 4 Distributed Document Store
Routing a Document to a Shard
How Primary and Replica Shards Interact
Creating, Indexing, and Deleting a Document
Retrieving a Document
Partial Updates to a Document
Multidocument Patterns
Chapter 5 Searching—The Basic Tools
The Empty Search
Multi-index, Multitype
Pagination
Search Lite
Chapter 6 Mapping and Analysis
Exact Values Versus Full Text
Inverted Index
Analysis and Analyzers
Mapping
Complex Core Field Types
Chapter 7 Full-Body Search
Empty Search
Query DSL
Queries and Filters
Most Important Queries and Filters
Combining Queries with Filters
Validating Queries
Chapter 8 Sorting and Relevance
Sorting
String Sorting and Multifields
What Is Relevance?
Fielddata
Chapter 9 Distributed Search Execution
Query Phase
Fetch Phase
Search Options
scan and scroll
Chapter 10 Index Management
Creating an Index
Deleting an Index
Index Settings
Configuring Analyzers
Custom Analyzers
Types and Mappings
The Root Object
Dynamic Mapping
Customizing Dynamic Mapping
Default Mapping
Reindexing Your Data
Index Aliases and Zero Downtime
Chapter 11 Inside a Shard
Making Text Searchable
Dynamically Updatable Indices
Near Real-Time Search
Making Changes Persistent
Segment Merging
Search in Depth
Chapter 12 Structured Search
Finding Exact Values
Combining Filters
Finding Multiple Exact Values
Ranges
Dealing with Null Values
All About Caching
Filter Order
Chapter 13 Full-Text Search
Term-Based Versus Full-Text
The match Query
Multiword Queries
Combining Queries
How match Uses bool
Boosting Query Clauses
Controlling Analysis
Relevance Is Broken!
Chapter 14 Multifield Search
Multiple Query Strings
Single Query String
Best Fields
Tuning Best Fields Queries
multi_match Query
Most Fields
Cross-fields Entity Search
Field-Centric Queries
Custom _all Fields
cross-fields Queries
Exact-Value Fields
Chapter 15 Proximity Matching
Phrase Matching
Mixing It Up
Multivalue Fields
Closer Is Better
Proximity for Relevance
Improving Performance
Finding Associated Words
Chapter 16 Partial Matching
Postcodes and Structured Data
prefix Query
wildcard and regexp Queries
Query-Time Search-as-You-Type
Index-Time Optimizations
Ngrams for Partial Matching
Index-Time Search-as-You-Type
Ngrams for Compound Words
Chapter 17 Controlling Relevance
Theory Behind Relevance Scoring
Lucene’s Practical Scoring Function
Query-Time Boosting
Manipulating Relevance with Query Structure
Not Quite Not
Ignoring TF/IDF
function_score Query
Boosting by Popularity
Boosting Filtered Subsets
Random Scoring
The Closer, The Better
Understanding the price Clause
Scoring with Scripts
Pluggable Similarity Algorithms
Changing Similarities
Relevance Tuning Is the Last 10%
Dealing with Human Language
Chapter 18 Getting Started with Languages
Using Language Analyzers
Configuring Language Analyzers
Pitfalls of Mixing Languages
One Language per Document
One Language per Field
Mixed-Language Fields
Chapter 19 Identifying Words
standard Analyzer
standard Tokenizer
Installing the ICU Plug-in
icu_tokenizer
Tidying Up Input Text
Chapter 20 Normalizing Tokens
In That Case
You Have an Accent
Living in a Unicode World
Unicode Case Folding
Unicode Character Folding
Sorting and Collations
Chapter 21 Reducing Words to Their Root Form
Algorithmic Stemmers
Dictionary Stemmers
Hunspell Stemmer
Choosing a Stemmer
Controlling Stemming
Stemming in situ
Chapter 22 Stopwords: Performance Versus Precision
Pros and Cons of Stopwords
Using Stopwords
Stopwords and Performance
Divide and Conquer
Stopwords and Phrase Queries
common_grams Token Filter
Stopwords and Relevance
Chapter 23 Synonyms
Using Synonyms
Formatting Synonyms
Expand or contract
Synonyms and The Analysis Chain
Multiword Synonyms and Phrase Queries
Symbol Synonyms
Chapter 24 Typoes and Mispelings
Fuzziness
Fuzzy Query
Fuzzy match Query
Scoring Fuzziness
Phonetic Matching
Aggregations
Chapter 25 High-Level Concepts
Buckets
Metrics
Combining the Two
Chapter 26 Aggregation Test-Drive
Adding a Metric to the Mix
Buckets Inside Buckets
One Final Modification
Chapter 27 Building Bar Charts
Chapter 28 Looking at Time
Returning Empty Buckets
Extended Example
The Sky’s the Limit
Chapter 29 Scoping Aggregations
Chapter 30 Filtering Queries and Aggregations
Filtered Query
Filter Bucket
Post Filter
Recap
Chapter 31 Sorting Multivalue Buckets
Intrinsic Sorts
Sorting by a Metric
Sorting Based on “Deep” Metrics
Chapter 32 Approximate Aggregations
Finding Distinct Counts
Calculating Percentiles
Chapter 33 Significant Terms
significant_terms Demo
Chapter 34 Controlling Memory Use and Latency
Fielddata
Aggregations and Analysis
Limiting Memory Usage
Fielddata Filtering
Doc Values
Preloading Fielddata
Preventing Combinatorial Explosions
Chapter 35 Closing Thoughts
Geolocation
Chapter 36 Geo-Points
Lat/Lon Formats
Filtering by Geo-Point
geo_bounding_box Filter
geo_distance Filter
Caching geo-filters
Reducing Memory Usage
Sorting by Distance
Chapter 37 Geohashes
Mapping Geohashes
geohash_cell Filter
Chapter 38 Geo-aggregations
geo_distance Aggregation
geohash_grid Aggregation
geo_bounds Aggregation
Chapter 39 Geo-shapes
Mapping geo-shapes
Indexing geo-shapes
Querying geo-shapes
Querying with Indexed Shapes
Geo-shape Filters and Caching
Modeling Your Data
Chapter 40 Handling Relationships
Application-side Joins
Denormalizing Your Data
Field Collapsing
Denormalization and Concurrency
Solving Concurrency Issues
Chapter 41 Nested Objects
Nested Object Mapping
Querying a Nested Object
Sorting by Nested Fields
Nested Aggregations
Chapter 42 Parent-Child Relationship
Parent-Child Mapping
Indexing Parents and Children
Finding Parents by Their Children
Finding Children by Their Parents
Children Aggregation
Grandparents and Grandchildren
Practical Considerations
Chapter 43 Designing for Scale
The Unit of Scale
Shard Overallocation
Kagillion Shards
Capacity Planning
Replica Shards
Multiple Indices
Time-Based Data
Index Templates
Retiring Data
User-Based Data
Shared Index
Faking Index per User with Aliases
One Big User
Scale Is Not Infinite
Administration, Monitoring, and Deployment
Chapter 44 Monitoring
Marvel for Monitoring
Cluster Health
Monitoring Individual Nodes
Cluster Stats
Index Stats
Pending Tasks
cat API
Chapter 45 Production Deployment
Hardware
Java Virtual Machine
Transport Client Versus Node Client
Configuration Management
Important Configuration Changes
Don’t Touch These Settings!
Heap: Sizing and Swapping
File Descriptors and MMap
Revisit This List Before Production
Chapter 46 Post-Deployment
Changing Settings Dynamically
Logging
Indexing Performance Tips
Rolling Restarts
Backing Up Your Cluster
Restoring from a Snapshot
Clusters Are Living, Breathing Creatures