“HBase and Hadoop are the only technologies proven to scale to dozens of petabytes on commodity servers, currently being used by companies such as Facebook, Twitter, Adobe and Salesforce.com.”–Monte Zweben.
Is it possible to turn Hadoop into a RDBMS? On this topic, I have interviewed Monte Zweben, Co-Founder and Chief Executive Officer of Splice Machine.
Q1. What are the main challenges of applications and operational analytics that support real-time, interactive queries on data updated in real-time for Big Data?
Monte Zweben: Let’s break down “real-time,
interactive queries on data updated in real-time for Big Data”.
“Real-time, interactive queries” means that results need to be
returned in milliseconds to a few seconds.
For “Data updated in real-time” to happen, …
Webm_v2 was add oracle and mongodb monitor module
webm was agent uploaded mode to save statistics
we use mysql database as monitor server
we already design tables to store these data (consider for future analysis)
you can download from github : https://github.com/ylouis83/webm
In the word "NoSQL", the letters "No" are an acronym so the meaning is "Not Only SQL" rather than "No SQL". True or false?
Historically, it's false
The first NoSQL product was a classic DBMS which didn't happen to use SQL for a query language, featured in Linux Journal in 1999. Its current web page has a traffic-sign symbol of the word SQL with a bar through it, and a title "NoSQL: a non-SQL RDBMS".
For a meetup in June 2009 about "open source, distributed, non-relational databases" the question came up "What's a good name?" Eric Evans of Rackspace suggested NoSQL, a suggestion which …[Read more]
1.CPU 为intel haswall最新架构,减少了功能的损耗
3.DDR4 memory 拥有更高的主频
Reference Oracle AWR. These two was developed by python and perl.
Both of these are following data collection method.
Use these tools can help quick identify problem.
I’ve enjoyed visiting Buenos Aires once a year for the MySQLNoSQLCloud event, put together by the awesome people at Binlogic (in particular, their proprietor Santiago Lertora). It’s happening again in 2014, which by my count is the third edition, and there’s a twist: Buenos Aires on 13 & 14 November, and Cordoba on 17 November. It’s never been held in Cordoba before (like an annex event), so I think this could be extremely exciting.
If you’re looking to speak, send Santiago a note at email@example.com (or leave a message here). I’ll put you in touch with him. If you’re looking to sponsor, you get attendees from all over Latin America.
Well, currently I am into the third week of mongodb node course
"M101JS: MongoDB for Node.js Developers" and I am pretty
Lots of personal learning into node and mongodb.
The third week subject of "Patterns, Case Studies & Tradeoffs" is really interesting.
Here is a list of topics, I learned about:
- Mongodb rich documents concept.
- Mongodb schema use cases.
- Mongodb one:one, one:many, many:many use cases.
- How to select schema based on the usage like whether you want max performance
or it may be a tradeoff.
One important point, I learned during the course is:
"While relational databases usually go for the normalised 3rd form so that data usage is agnostic to application, but mongodb schema arrangement is very closely related to application usage and varies accordingly."
I recently presented a webinar explaining how you can enjoy the key benefits of NoSQL data stores without giving up all of the great features provided by a mature RDBMS.
In case you weren’t able to attend (or wanted to refresh your memory) then the webinar replay and charts are now available.
There’s often a lot of excitement around NoSQL Data Stores with the promise of simple access patterns, flexible schemas, scalability and High Availability. The downside can come in the form of losing ACID transactions, consistency, flexible queries and data integrity checks. What if you could have the best of both worlds?
This webinar showed how MySQL Cluster provides simultaneous SQL and …[Read more]
“There are four things that motivate open source
1. The challenge/puzzle of programming, 2. Need for the software, 3. Personal advancement, 4. Belief in open source” — Bruce Momjian.
On PostgreSQL and the challenges of motivating and managing open source teams, I have interviewed Bruce Momjian, Senior Database Architect at EnterpriseDB, and Co-founder of the PostgreSQL Global Development Group and Core Contributor.
Q1. How did you manage to transform PostgreSQL from an abandoned academic project into a commercially viable, now enterprise relational database?
Bruce Momjian: Ever since I was a developer of database …[Read more]