Demonstrate using RedisJSON and RediSearch to load and query health nomenclature collections.
Many health-related applications rely on nomenclature collections to translate between medical system codes to display values and other encodings.
Redis provides a number of advantages over a relational database for storing nomenclature:
- high-performance lookup using Redis in-memory database
- storage/retrieval of nomenclature data in JSON format (RedisJSON module)
- full-text indexes allow wildcard lookup for UX typeahead controls (RediSearch module)
Two of the main features of this project are:
- use of Redis database to store the nomenclature collections
- use of Redis library to interact with Redis from a TypeScript application
The project depends on minimum levels of the Redis products:
- Redis 6.2.3
- RedisJSON 2.0.4
- RediSearch 2.2.6
The environment.ts file contains the Redis connection configuration. Replace the values specific to your installation.
To load a CSV to Redis, uncomment relevant sections of the file loadDB.ts and run npm run loadDB.
To run sample queries, uncomment relevant sections of the file queryDB.ts and run npm run queryDB.
To keep this project small only excerpts of the full collections are included in the data folder. The full CSV collections are available separately.
Primary index is populated using command 'JSON.SET meta:olis:test:request: $ {JSON object}'
Secondary full-text index definition:
FT.DROPINDEX idx:meta:olis:test:request
FT.CREATE idx:meta:olis:test:request ON JSON PREFIX 1 meta:olis:test:request:
SCHEMA
$.requestName AS requestName TEXT NOSTEM
$.reportCategory AS reportCategory TAG CASESENSITIVE
Sample queries:
JSON.GET meta:olis:test:request:TR10043-8
FT.SEARCH idx:meta:olis:test:request "@requestName:amino*"
FT.SEARCH idx:meta:olis:test:request "@reportCategory:{Chemistry} @requestName:amino*"
Primary index is populated using command 'JSON.SET meta:olis:test:result: $ {JSON object}'
Secondary full-text index definition:
FT.DROPINDEX idx:meta:olis:test:result
FT.CREATE idx:meta:olis:test:result ON JSON PREFIX 1 meta:olis:test:result:
SCHEMA
$.loincName AS loincName TEXT NOSTEM
$.resultCategory AS resultCategory TAG CASESENSITIVE
Sample queries:
JSON.GET meta:olis:test:result:47213-4
FT.SEARCH idx:meta:olis:test:result "@loincName:hema*"
FT.SEARCH idx:meta:olis:test:result "@resultCategory:{MICRO} @loincName:hema*"
Primary index is populated using command 'JSON.SET meta:olis:test:micro: $ {JSON object}'
Secondary full-text index definition:
FT.DROPINDEX idx:meta:olis:test:micro
FT.CREATE idx:meta:olis:test:micro ON JSON PREFIX 1 meta:olis:test:micro:
SCHEMA
$.microName AS microName TEXT NOSTEM
$.microType AS microType TAG CASESENSITIVE
Sample queries:
JSON.GET meta:olis:test:micro:103431004
FT.SEARCH idx:meta:olis:test:micro "@microName:strep*"
FT.SEARCH idx:meta:olis:test:micro "@microType:{Organism} @microName:strep*"
Primary index is populated using command 'JSON.SET meta:test:facility: $ {JSON object}'
Secondary full-text index definition:
FT.DROPINDEX idx:meta:test:facility
FT.CREATE idx:meta:test:facility ON JSON PREFIX 1 meta:test:facility:
SCHEMA
$.type AS type TAG CASESENSITIVE
$.name AS name TEXT SORTABLE
$.licenseId AS licenseId TEXT NOSTEM
Sample queries:
JSON.GET meta:test:facility:104284941564
FT.SEARCH idx:meta:test:facility "@name:lennox*"
FT.SEARCH idx:meta:test:facility "@type:{LTC} @name:lennox*"
FT.SEARCH idx:meta:test:facility "@type:{PHCY} @name:shoppers*"
FT.SEARCH idx:meta:test:facility "@licenseId:CB01"
Primary index is populated using command 'JSON.SET meta:lab:lic: $ {JSON object}'
Secondary full-text index definition:
FT.DROPINDEX idx:meta:lab:lic
FT.CREATE idx:meta:lab:lic ON JSON PREFIX 1 meta:lab:lic:
SCHEMA
$.type AS type TAG CASESENSITIVE
$.lookup AS lookup TEXT SORTABLE
Sample queries:
JSON.GET meta:lab:lic:4104
FT.SEARCH idx:meta:lab:lic "@lookup:alpha*"
FT.SEARCH idx:meta:lab:lic "@lookup:4104"
FT.SEARCH idx:meta:lab:lic "@type:{LAB} @lookup:alpha*"
FT.SEARCH idx:meta:lab:lic "@type:{LAB} @lookup:4104"
Primary index is populated using command 'JSON.SET meta:phys:lic: $ {JSON object}'
Secondary full-text index definition:
FT.DROPINDEX idx:meta:phys:lic
FT.CREATE idx:meta:phys:lic ON JSON PREFIX 1 meta:phys:lic:
SCHEMA
$.type AS type TAG CASESENSITIVE
$.lookup AS lookup TEXT SORTABLE
Sample queries:
JSON.GET meta:phys:lic:63225
FT.SEARCH idx:meta:phys:lic "@lookup:stev*"
FT.SEARCH idx:meta:phys:lic "@lookup:63225"
FT.SEARCH idx:meta:phys:lic "@type:{MDL} @lookup:stev*"
FT.SEARCH idx:meta:phys:lic "@type:{MDL} @lookup:stevensonkev*"
FT.SEARCH idx:meta:phys:lic "@type:{MDL} @lookup:63225"
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