Create an Azure AI Search solution

Azure AI Search

Manage capacity

• Service tiers and capacity management
• **Free (F)
• Basic (B)** 15 indexes and 2 GB **- Standard (S)

** S1-S3 เพิ่ม ****indexes + storage >>> S3HD, which is optimized for fast read performance on smaller numbers of indexes. - Storage Optimized (L) - Large indexes, at the cost of higher query latency

• Replicas and partitions
• Replicas service multiple concurrent query requests
• Partitions split I/O operations for read / index

Azure AI Search components

• Data source - Unstructured files in Azure blob storage containers.
• Tables in Azure SQL Database.
• Documents in Cosmos DB.
• Skillset - AI skill ที่มาช่วย indexer มันอาจจะแอบไปเรียก Azure AI Language Service เพื่อให้รู้ว่าภาษาที่ใช้ / Key Phase / Location เป็นต้น หรือทำ Custom Model ก็ได้
• เขียน Logic เอง Deploy webapi / Azure Function
• Indexer - engine ทำ index ข้อมูลที่เก็บ จะอิงไปทำ Skillset ที่มี ถ้าเพิ่ม Field / Skill ควร ReIndex ใหม่ เช่น เอาเอกสารที่มีรูปเข้าไป มันจะแยก

document
- metadata_storage_name
- metadata_author
- content
- normalized_images
-> image0
-> image1

//ถ้ามี Skillset language จะมีตัว
document
- metadata_storage_name
- metadata_author
- content
- normalized_images
-> image0
-> image1
- language 

• **Index - searchable result of the indexing process. It consists of a collection of JSON documents
• key**: Fields that define a unique key for index records. - searchable: Fields that can be queried using full-text search.
• filterable: Fields that can be included in filter expressions to return only documents that match specified constraints.
• sortable: Fields that can be used to order the results.
• facetable: Fields that can be used to determine values for facets (user interface elements used to filter the results based on a list of known field values).
• retrievable: Fields that can be included in search results (by default, all fields are retrievable unless this attribute is explicitly removed).

Full text search

mode based on the Lucene query syntax

• Simple
• Full complex filtering, regular expressions, and other more sophisticated queries\

query include:

• search - A search expression that includes the terms to be found.