Unlimited is a term currently floating in the world of NoSql.
What does this mean?
>I have a document with 3 attributes today, and then go to production, then when I need to add 2 more attri
Month: September 2021
PostgreSQL – Database exception in Slick 3.0 when insertion insertion
By batch inserting thousands of records every 5 seconds in Smooth 3, I got
org.postgresql .util.PSQLException: FATAL: sorry, too many clients already My data access layer looks like:
va
Mono a function for each updated row in PostgreSQL
I have a sql UPDATE statement in the plpgsql function. I now want to call the pg_notify function for each updated row, and am not sure if my solution is the best possibility.
I don’t know whe
Large capacity NOSQL solution: Aerospike actual combat
Github has been focusing on providing news push services for developers for many years. Through a push SDK, the mobile terminal establishes a long connection with the server and maintains an online
NOSQL – Redis: Handling failover?
Redis really seems to be a great product with built-in replication and amazing speed. After testing, it definitely feels like a 2010 memcached replacement.
However, since memcached is usually
PowerDesigner generates SQL table name with quotation number solution
When powerdesigner connects to oracle11g, I created a table aaa
The generated SQL statement is:
drop table ” aaa” cascade constraints;
create table “aaa”
(
“id” INT not null,
“name” NVARCHAR
Receive the postgreSQL backend behavior after “Termination” (‘x’) after “Commit”
We run postgres server v9.2.8 and use epgsql (erlang) as the client library. In some cases, we produce in a production environment but cannot reproduce it in a development environment , We are losi
Which version of CQLSH is compatible with Cassandra 2.1.9?
The problem I am facing is populate_io_cache_on_flush is not a column defined in this metadata problem mentioned in the question.
According to 0700 in the second article of the answer For the
How to deal with changes in data over NOSQL
We are evaluating the upcoming projects of NoSQL. I tend to think about things in an RDBMS way and have difficulties in conceptualization and lack of standardization.
I know that copying data
OpenFire Source Code 25: Message Receipts and Offline News (below)
This article continues immediately above.
Redis-based message receipt. The main process is divided into the following steps:
1) Temporarily store the message in redis, and set the expir