Sriveena, Read-through works as follows: when you do a cache.get(...), and a record is not in the cache, then it goes to the configured CacheStore and requests the value from it. When the same key is read from cache next time, then call to the underlying database doesn't happen, and caches value is returned.
So, auto-synchronization doesn't happen. Cache is populated on demand. And it works regardless of the key type. Denis вт, 10 июл. 2018 г. в 14:12, Sriveena Mattaparthi < [email protected]>: > Hi, > > > > How does DataGrid readthrough works? > > 1. How does it auto synchronize the cache with database data? > > 2. Will it poll the underlying database? > > 3. Will it incrementally pull the data based on the key specified > on the cache? > > 4. Will the read through works if the cache key datatype is > different other than a number(like String, Composite key or timestamp) > > > > Please confirm. > > > > Thanks & Regards, > > Sriveena > > > > *From:* Denis Mekhanikov [mailto:[email protected]] > *Sent:* Wednesday, June 27, 2018 6:37 PM > > > *To:* [email protected] > *Subject:* Re: Information regarding Ignite Web Console > > > > Sriveena, > > > > You can have objects of different types in one cache, but querying it will > be tricky. > > You will have to configure QueryEntities > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fapacheignite-sql.readme.io%2Fdocs%2Fschema-and-indexes%23section-queryentity-based-configuration&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7C6e1e06d9d5c0452da8da08d5dc2ee46a%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636657016326903455&sdata=Z093el7e%2Fj%2BngjoDdJjUwWNUWfPu4Yb0OZgKv3ZEiis%3D&reserved=0> > for > your data, that will describe, which fields are available for querying. > > Annotation based configuration > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fapacheignite-sql.readme.io%2Fdocs%2Fschema-and-indexes%23section-queryentity-based-configuration&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7C6e1e06d9d5c0452da8da08d5dc2ee46a%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636657016326903455&sdata=Z093el7e%2Fj%2BngjoDdJjUwWNUWfPu4Yb0OZgKv3ZEiis%3D&reserved=0> > is also available. > > Querying nested object is also possible, if you configure the query > entities properly: > https://apacheignite-sql.readme.io/docs/schema-and-indexes#section-indexing-nested-objects > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fapacheignite-sql.readme.io%2Fdocs%2Fschema-and-indexes%23section-indexing-nested-objects&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7C6e1e06d9d5c0452da8da08d5dc2ee46a%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636657016326903455&sdata=1amkW4husY1fLSN%2FKtEBx8app5u%2FkUJhqiA4JCYgQ0o%3D&reserved=0> > > > > So, if you want to run SQL queries over your data, it should have some > concrete schema. > > > > Denis > > > > ср, 27 июн. 2018 г. в 14:08, Sriveena Mattaparthi < > [email protected]>: > > Thank you so much for the quicker responses unlike any other forums..I > really appreciate that. > > > > One last question Denis, we have plan to load all the mongodb collections > to ignite cache and perform complex aggregations and join in memory. > > > > But Unlike any RDBMS data stores we cannot have fixed model objects for > each collections as each document in the collection may have its own > columns and datatypes. > > > > Could you please suggest, if ignite is the choice for this kind of > scenario where same mongo collection have different type of data. > > > > Please note that we have tried using BinaryObject, but we are stuck that > ignite doesn’t support querying on the inner binaryobject.( binaryobject > inside a binaryobject – sub documents, array inside a mongo document) > > > > Thanks & Regards, > > Sriveena > > > > *From:* Denis Mekhanikov [mailto:[email protected]] > *Sent:* Wednesday, June 27, 2018 4:02 PM > > > *To:* [email protected] > *Subject:* Re: Information regarding Ignite Web Console > > > > Sriveena, > > > > CacheStore > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fignite.apache.org%2Freleases%2Flatest%2Fjavadoc%2Forg%2Fapache%2Fignite%2Fcache%2Fstore%2FCacheStore.html&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7Cf08122ce8c394e2c7a1e08d5dc193829%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656923260911744&sdata=7LEcZ6l%2FFMHm7ZZ518w4WH%2FBm8ylC3yhTDTl05AcZ0M%3D&reserved=0> > extends > the CacheWriter > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstatic.javadoc.io%2Fjavax.cache%2Fcache-api%2F1.0.0%2Fjavax%2Fcache%2Fintegration%2FCacheWriter.html&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7Cf08122ce8c394e2c7a1e08d5dc193829%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656923260911744&sdata=UBNLjs2J4E4IZG6JGhToO6QzOr7QXkNo7OFZycVYbq0%3D&reserved=0> > interface, which has delete > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstatic.javadoc.io%2Fjavax.cache%2Fcache-api%2F1.0.0%2Fjavax%2Fcache%2Fintegration%2FCacheWriter.html%23delete(java.lang.Object)&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7Cf08122ce8c394e2c7a1e08d5dc193829%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656923260921745&sdata=2q1Mutj83625oVhVIEiawuiarAsK8UNmyZvrbk9J7nE%3D&reserved=0> > and deleteAll > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstatic.javadoc.io%2Fjavax.cache%2Fcache-api%2F1.0.0%2Fjavax%2Fcache%2Fintegration%2FCacheWriter.html%23deleteAll(java.util.Collection)&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7Cf08122ce8c394e2c7a1e08d5dc193829%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656923260921745&sdata=NIJFLEwPbXOgpgkja9m48c8hENGNg1dTOyghSzaIiJ4%3D&reserved=0> > methods, which will be called by Ignite, when you remove entries from > Ignite caches. > > write > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstatic.javadoc.io%2Fjavax.cache%2Fcache-api%2F1.0.0%2Fjavax%2Fcache%2Fintegration%2FCacheWriter.html%23write(javax.cache.Cache.Entry)&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7Cf08122ce8c394e2c7a1e08d5dc193829%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656923260931759&sdata=tBdc%2FPmMicFBKc82w7s10TvP5r9Sl7%2B7FLPJidwsFsw%3D&reserved=0> > and writeAll > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fstatic.javadoc.io%2Fjavax.cache%2Fcache-api%2F1.0.0%2Fjavax%2Fcache%2Fintegration%2FCacheWriter.html%23writeAll(java.util.Collection)&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7Cf08122ce8c394e2c7a1e08d5dc193829%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656923260931759&sdata=Sw5W5BSEgyrBRfoIUpx7pwIfYl5gXSNXtYefE4ghmBk%3D&reserved=0> > methods will be called, when you put some data into cache. > > It works the same way with MySQL or any other relational DB. > > So, CacheStore gives you a possibility to implement synchronization with > any external data source. You can do it for MongoDB, if you need. > > > > Denis > > > > ср, 27 июн. 2018 г. в 13:18, Sriveena Mattaparthi < > [email protected]>: > > Thanks Denis for the pointers. > But the case explained in https://www.youtube.com/watch?v=XBtI2Z01kAA > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DXBtI2Z01kAA&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7Cf08122ce8c394e2c7a1e08d5dc193829%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656923260941765&sdata=HLmtH02Dr4h455PggnRBQxe0eZJxENxp7nDlPXb5xek%3D&reserved=0> > - Using Ignite Web Console for Automatic RDBMS Integration with Apache > Ignite - Part 3. shows that any deletions happening on ignite cache are > getting reflected in the mysql database. Which I thought is ignite > feature of autosyncing data to and from RDBMS databases. Please correct > my understanding. Thanks & Regards, Sriveena > > > > *From:* Denis Mekhanikov [mailto:[email protected]] > *Sent:* Wednesday, June 27, 2018 3:28 PM > > > *To:* [email protected] > *Subject:* Re: Information regarding Ignite Web Console > > > > Sriveena, > > > > Web Console can generate schema in Ignite based on an existing schema in a > relational database. > > But you can do it yourself, without use of Web Console. > > Web Console only makes it easier to wire-up stuff, i.e. generate required > data classes and configuration. > > > > Unfortunately, this feature is not available for NoSQL databases. But you > still can configure everything yourself. > > You will need to implement a CacheStore > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fignite.apache.org%2Freleases%2Flatest%2Fjavadoc%2Forg%2Fapache%2Fignite%2Fcache%2Fstore%2FCacheStore.html&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7Cf4918a96e28644d507b908d5dc1491ba%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656903279754570&sdata=V09AYASdhDUexLS4ZNs44zvEWjJ1lmZFqjVRwQft2xs%3D&reserved=0>, > that will load data from your database into Ignite. > > Here is documentation on this feature: > https://apacheignite.readme.io/docs/3rd-party-store > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fapacheignite.readme.io%2Fdocs%2F3rd-party-store&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7Cf4918a96e28644d507b908d5dc1491ba%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656903279754570&sdata=9w94GuXNlswyUb9XshSsZtol3Qp8ib7GIk9dpwbZiYQ%3D&reserved=0> > > > > Denis > > > > ср, 27 июн. 2018 г. в 12:41, Sriveena Mattaparthi < > [email protected]>: > > Hi Denis, > > > > Thank you so much for the quick turn around > > Could you also confirm if there is a similar integration from ignite to > NoSQL database like MongoDB ? > > > > Our requirement also has mongo db changes to be automatically synced up to > Ignite? > > > > Please help. > > > > Thanks & Regards, > Sriveena > > > > *From:* Denis Mekhanikov [mailto:[email protected]] > *Sent:* Wednesday, June 27, 2018 2:58 PM > *To:* [email protected] > *Subject:* Re: Information regarding Ignite Web Console > > > > Sriveena, > > > > You can find sources of Web Console in the Ignite Git repository: > https://github.com/apache/ignite/tree/master/modules/web-console > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fapache%2Fignite%2Ftree%2Fmaster%2Fmodules%2Fweb-console&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7C1bd39c9b865f43eca6d408d5dc104bee%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656884921777570&sdata=J6LSkoURVCvHJDnKyWrjpFRj02E9T0njpXSxFJPJAvU%3D&reserved=0> > > > > If you want to run Web Console by yourself, you can use the following > Docker image: > https://hub.docker.com/r/apacheignite/web-console-standalone/ > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhub.docker.com%2Fr%2Fapacheignite%2Fweb-console-standalone%2F&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7C1bd39c9b865f43eca6d408d5dc104bee%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656884921777570&sdata=xQKYRGlEn9UQQ2EDM9nc6RTZLEbHH7eCl7vGCf2UbLM%3D&reserved=0> > > There is also Web Console, hosted by GridGain, available at > https://console.gridgain.com/ > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fconsole.gridgain.com%2F&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7C1bd39c9b865f43eca6d408d5dc104bee%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656884921787575&sdata=yyxqlC%2BcnR9yLRwgGxD6aCvy0t9eh2J4djvNsztr2YM%3D&reserved=0> > > > > Denis > > > > ср, 27 июн. 2018 г. в 10:14, Sriveena Mattaparthi < > [email protected]>: > > Hi, > > I am interested to know if Ignite Webconsole is opensource as the document > says > > Ignite can integrate with any relational database (RDBMS) that supports a > JDBC driver - Oracle, PostgreSQL, Microsoft SQL Server, and MySQL > > Ignite supports automatic RDBMS integration via Ignite Web Console > <https://apac01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fconsole.gridgain.com%2F&data=02%7C01%7CSriveena.Mattaparthi%40ekaplus.com%7C1bd39c9b865f43eca6d408d5dc104bee%7C2a5b4e9716be4be4b2d40f3fcb3d373c%7C1%7C0%7C636656884921797580&sdata=CorLQYS%2FCirN%2BOxK72fvwKFGL5E%2BSQ%2FY4Qn0hPzNvW0%3D&reserved=0> > . > > Please confirm. > > Thanks & Regards, > > Sriveena > > > >
