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1Z0-883 MySQL 5.6 Database Administrator

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1Z0-883 exam Dumps Source : MySQL 5.6 Database Administrator

Test Code : 1Z0-883
Test Name : MySQL 5.6 Database Administrator
Vendor Name : Oracle
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Oracle MySQL 5.6 Database Administrator

Oracle pronounces MySQL 5.6 GA | killexams.com Real Questions and Pass4sure dumps

MySQL, one of the crucial popular open supply databases on earth, has just reached edition 5.6.

unlike typical releases, the new MySQL version brings accelerated efficiency, scalability, reliability and manageability.

“MySQL 5.6 unlock Candidate obtained tremendous comments from the neighborhood and helped us to correctly mature the expertise to announce accepted Availability.”

“the new elements and enhancements that MySQL 5.6 offers additional exhibit Oracle’s investment in using MySQL innovation, making MySQL a beautiful fit for nowadays’s most demanding net, Cloud and embedded application requirements,” stated Tomas Ulin, vice chairman of MySQL Engineering.

Highlights of MySQL 5.6:

• New points and enhancements in MySQL 5.6 can be found to MySQL clients in the MySQL community edition.;

• MySQL 5.6 provides enhanced linear scalability, assisting clients to leverage up to date hardware capabilities;

• enhanced query Execution instances and diagnostics provided via an better MySQL Optimizer diagnostics is now obtainable;

• New efficiencies in how outcomes sets are chosen, sorted and returned deliver sizeable improvement in question execution instances;

• enhanced performance throughput and application availability with an superior InnoDB storage engine;

• Crash-safe Replication enables the binary log and slaves to instantly improve appropriate positions within the replication circulation in case of a crash, and resume replication without administrator intervention;

• Checksums keep statistics integrity throughout the cluster with the aid of instantly detecting and alerting on errors;

• New instrumentation allows for clients to improved display screen most resource intensive queries, objects, clients and functions;

• New summaries with aggregated records grouped through question, thread, user, host and object are also purchasable;

• The enhancements enable for less complicated default configuration with below five percent overhead;

• MySQL 5.6 contains a few additional enhancements like Geographic suggestions systems - exact Spatial operations, more advantageous IPv6 compliance and optimized server defaults.

an entire listing of fastened bugs, updates and new elements can also be found in the finished reputable changelog, encapsulated into the archive.

down load MySQL 5.6 at the moment from Softpedia.


MySQL group Server vs. Oracle MySQL databases | killexams.com Real Questions and Pass4sure dumps

In January 2010, Oracle bought solar Microsystems for $7.four billion -- a deal that protected the MySQL database administration...

gadget among the software and hardware components brought beneath Oracle's control. considering the fact that then, Oracle has persevered to present MySQL as a free, open supply product and has introduced a number of MySQL business variations as feasible options to that -- and to its flagship Oracle Database application.

these now not common with Oracle MySQL databases could discover the variations between the products difficult, specially when attempting to choose between the open supply and commercial editions. right here we look on the a lot of Oracle MySQL items to provide you with a stronger idea of how they evaluate to and fluctuate from one yet another, so you can greater with no trouble opt for the one it really is appropriate in your company.

MySQL neighborhood Server (or neighborhood version) is what many take into account after they suppose of MySQL. It presents the fundamental aspects you expect with a database administration system, together with the skill to create tables, views, triggers and kept strategies. It also includes partitioning and replication capabilities, in addition to connectors for distinct languages, together with Open Database Connectivity, Java Database Connectivity and .net.

Open source MySQL advantages, limitations

Oracle presents the MySQL neighborhood Server as an open source product this is freely obtainable for over 20 structures, together with home windows, Linux, Unix and Mac. The group edition includes varied storage engines, reminiscent of InnoDB and MyISAM, reminiscence and community Database (NDB). furthermore, the Oracle MySQL Workbench community device fashions, develops and administers databases in the community version.

Oracle additionally presents the MySQL Cluster edition, a model of the group version. MySQL Cluster comprises the identical basic aspects as the neighborhood version, however provides a dispensed, multi-master structure to scale MySQL across distinct commodity programs and to make certain fault tolerance.

MySQL Cluster, just like the community version, is freely obtainable for download and is in accordance with the accepted Public License (GPL). The license means that you can entry and adjust the source code and distribute the updated code as part of your device.

If the usage of both of those variants, besides the fact that children, you ought to adhere to the phrases of the GPL. as an instance, if you embed the neighborhood version in your software, you have to make all of the application's source code available under the GPL. before distributing a edition that makes use of the community version or MySQL Cluster, make sure you entirely understand the GPL phrases.

industrial vs. open supply MySQL

if you can not make an open source version work, but still wish to implement MySQL, that you would be able to select one among Oracle's three commercial items: MySQL typical version, MySQL business version or MySQL Cluster carrier Grade edition (CGE).

The common version offers lots of the fundamentals you get with the MySQL neighborhood edition, including language connectors, replication capabilities, and the MyISAM and InnoDB database engines. You additionally get MySQL Workbench regular edition, which supports extra facets than MySQL Workbench community, similar to being in a position to automate database documentation.

The business edition builds on the commonplace edition with points selected to the enterprise. as an example, you get router services, partitioning capabilities and the NDB storage engine all ordinary in the group version, however no longer within the regular edition. Plus, Oracle makes the MySQL Workbench business edition tool accessible in the enterprise edition. This edition of the device presents extra elements than both MySQL Workbench neighborhood or MySQL Workbench ordinary version.

The commercial enterprise edition additionally offers a few superior add-ons now not attainable within the community edition or standard edition. as an instance, it contains equipment to monitor MySQL servers, again up facts and implement business security, as well as equipment related to scalability and high availability.

MySQL Editions --Comparison Chart

Cluster CGE expands on the business edition through proposing support for superior statistics set sizes. It also contains MySQL Cluster manager, which automates management projects such as performing improvements, backups, reconfigurations, database tuning and on-line scaling. Plus, this version helps lively geographical replication, which makes it feasible to distribute clusters geographically for scalability and disaster restoration.

All three business products, when licensed with an annual subscription, additionally offer Oracle Premier help at no extra can charge. Premier support provides clients with access to product updates, guide elements and, of route, technical suggestions, which you do not get with the group version.

together with the three commercial versions, Oracle also presents MySQL Cloud carrier, which is built on MySQL business edition and, based on Oracle, offers all of the merits of that version. You also get self-provider provisioning and integration with Oracle platform as a carrier and infrastructure as a service.

Embedded MySQL database alternate options

Oracle additionally offers its three business MySQL variants to unbiased application providers (ISVs), value-added resellers (VARs) and usual equipment manufacturers (OEMs) for embedding MySQL databases into their application. The embedded product offerings are comparable to the typical business choices, except that Premier guide isn't covered. in case you need Premier aid, you need to pay added.

moreover the three industrial variations, the embedded software also comprises a fourth edition: MySQL traditional version. The traditional edition is attainable only to ISVs, VARs and OEMs that license MySQL as an embedded database. This version is comparable to the general version, apart from that it does not aid the InnoDB storage engine, nor does Oracle supply MySQL Workbench for this edition.

Oracle also does not post the expense of embedded licenses, unlike its standard commercial products and cloud provider. for example, Oracle naturally lists the annual subscription costs for the standard version, which run from $2,000 for a server with as much as 4 sockets to $four,000 for a server with five or extra sockets. although, to get the rate of the embedded license for the common version, you should contact MySQL Embedded sales at once.

picking out between MySQL editions

evidently, there's greater to MySQL than handiest the free, open source versions (group and Cluster). you could also choose between the three business editions (common, enterprise and Cluster CGE), as well as the classic edition if you are embedding MySQL. Plus, you have the MySQL Cloud provider as an extra option.

if you plan to distribute your device beneath the phrases of the GPL, be sure you at the least trust one of the open supply variants, unless you require the added elements that include the enterprise edition or MySQL Cloud provider. The open supply editions were commonly carried out and are supported by means of a big person neighborhood. That referred to, make certain you totally take into account how the GPL works and the way the Oracle MySQL databases differ from one a different earlier than making any ultimate selections on open supply vs. commercial MySQL.


how to start a career in Database Administration | killexams.com Real Questions and Pass4sure dumps

starting with MySQL or Oracle is the preliminary step that most will imply if in case you have your eyes set on becoming a database administrator. you probably have any constraints that make attending average classes difficult, you could be taught SQL online. There are on-line courses for Oracle, too, that you can take at your desired tempo and convenience. since data storage is on the coronary heart of all agencies, there’s a unexpectedly starting to be demand for database experts in the allied domains of tips assurance and safety. beginning a career in database administration skill becoming a database administrator (DBA) who handles a variety of capabilities related to database storage, development, setting up, checking out, troubleshooting, retrieval, and safety. considering that enterprises use large records programs to store suggestions, you are going to commonly work as a DBA with information communication and community equipment analysts who will design, run assessments, and investigate techniques like WANs (broad area networks), LANs (local enviornment networks), corporate intranets, and the cyber web.

So, right here’s the way to get the ball rolling for your profession within the domain of database administration.

1. Earn a Bachelor’s diploma

How to start Career in Database Administration - read.unanth.com?utm_source=blog

Most database administrators hold a Bachelor’s degree, and you should have one, too — preferably in suggestions techniques, desktop science, or the administration of guidance programs (MIS), given that employers this present day choose such applicants. Your chosen bachelor’s diploma classes may still ideally consist of courses that cowl subject matters like database systems, internet web page functions, discrete buildings, facts mining and records structure, data communications, databases and distributed systems, as well as database management programs. apart from your diploma, make sure you are trying doing an internship that introduces you to quite a number projects, which you may should do as a database administrator. With this adventure, you could possibly have an part over your opponents.

2. Take on-line courses

in case you don’t have a university degree but still aspire to start a career in database administration, you could seek online associate diploma lessons provided via a couple of colleges in the container of laptop science, tips methods, and database programming. if you have no training or experience in desktop science but are nevertheless drawn to the database administration landscape, that you may look at various the waters with the aid of taking on ar certificates path in programming or laptop office systems.

three. be trained SQL

How to start career in database administration? - read.unanth.com?utm_source=bloghere's a primary step in beginning your profession in database administration. in view that SQL is the programming language that’s used for writing database queries, you are going to need to be taught it. Be it enrolling in a lecture room route or deciding upon a certificates in IT or programming that emphasizes SQL in specific, should you come to a decision to study SQL online, you may have options galore. basically, something you gain knowledge of, you're going to have to gain knowledge of SQL anyway. So, it can pay to center of attention on this regular query language, which is supported by using a few relational databases.

if you happen to take SQL lessons, you're going to discover that most lessons are focused on MySQL, which is essentially the most familiar database that runs on both Linux and windows. PostgreSQL is a further prevalent SQL database that tech groups use. You can also take SQL certification exams after you have some abilities in the box. however, in case you intention to earn tricky yet prestigious certifications just like the MCSE statistics Platform (for database professionals who create enterprise-stage records solutions in cloud environments or on-premises) or MCSE enterprise Intelligence (for database experts managing the building and deployment of business intelligence reports and options), you should be ready to put the time and effort that passing such certifications calls for.

four. be taught Oracle

How to start career in database administration? - read.unanth.com?utm_source=blog

If Oracle is more your trend, that you may study Oracle online or in any other case in a means that could train and look at various your database abilities in a large choice of field areas. which you could soak up Oracle certification classes that offer a number of tracks and specialties. whereas researching SQL helps construction DBAs, in selected, who need to deal with coding, Oracle helps application DBAs who work for corporations that want third-celebration software comparable to PeopleSoft, Oracle, and many others. So, purpose to get mighty fundamentals in the event you decide to be taught Oracle and take a look at to get some hands-on adventure after getting mastered the fundamentals.

5. gain knowledge of to differentiate Between the classes and choose for that reason

How to start career in database administration? - read.unanth.com?utm_source=blog

For some individuals, Microsoft SQL Server is misnamed as “SQL,” but SQL is different. basically, remember to have a transparent theory of MySQL (open-source database), MS SQL (Microsoft’s relational database management equipment), and Oracle SQL (for working with SQL in Oracle database). Database administration is a little bit different in all these areas in keeping with the change in supported programming languages, server-aspect scripts, APIs and other access strategies, partitioning strategies, and so forth. reckoning on where you need your career to start from and reach, you should decide which of these you are looking to learn. on account that many classes that facilitate you to be trained online can be found at the present time, you simply deserve to do some homework to check which of them would help your career probably the most and are the correct healthy in your skill stage to shortlist probably the most valued certifications and programs so you might take.

Conclusion

beginning a profession in database administration doesn’t necessarily suggest you need to delivery work as a DBA.

Many specialists who work today as DBAs as soon as started their careers as records analysts and database developers — and you, too, can observe in their footsteps after earning your Bachelor’s diploma. whereas the job of an information analyst would make you become common with the collection and analysis of records contained in databases, working as a database developer would require you to collect counsel (that might then be inserted into databases), design and execute database applied sciences, and determine the efficiency of databases. to face out of the competition, be sure to also work against earning industry certifications. some thing route you come to a decision to take, be certain to have a clear theory of what you want to do and where you want your profession to move. figuring out this will assist you're making wise decisions.

issues:

dba ,database administration ,database ,sql ,oracle ,mysql ,ms sql


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MySQL 5.6 Database Administrator

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Oracle Announces MySQL Conference and New Development Milestone Release of MySQL 5.6 | killexams.com real questions and Pass4sure dumps

Apr 18, 2012

Oracle plans to hold a MySQL conference on September 29 and 30, just prior to Oracle OpenWorld 2012, which will be held in San Francisco from September 30 to October 4. The event called MySQL Connect is planned to provide an opportunity to learn about the latest MySQL features, discuss product roadmaps, and connect directly with the engineers behind the latest MySQL code. 

MySQL Connect will include six tracks: Performance and Scalability, High Availability, Cloud Computing, Architecture and Design, Database Administration, and Application Development, and feature technical sessions, hands-on labs and birds of a feather (BOF) sessions delivered by MySQL community members, users, customers and MySQL engineers from Oracle.

"The IOUG's MySQL Council has been collaborating with Oracle over the last year on ways to enrich the MySQL Community. To have our own two-day, MySQL-focused event, in conjunction with this year's Oracle OpenWorld, is a testament to Oracle's commitment to listen to, support and foster the MySQL Community," says Sarah Novotny, chairperson, IOUG MySQL Council.

The call for papers is now open and MySQL users and community members are encouraged to submit session proposals. 

In other MySQL news, Oracle has announced a new Development Milestone Release (DMR) for MySQL 5.6. Available for download in the MySQL Developer Zone, the MySQL 5.6 DMR provides new replication features enhancing availability with self-healing recovery, increased performance, and improved manageability.

Oracle is also providing early access to features under development for community testing and feedback through http://labs.mysql.com. The features under development include online operations for ADD index and NoSQL access to InnoDB via the Memcached protocol. 


Devart adds MariaDB support to dbForge Studio for MySQL v.6.1 and releases three standalone tools for MySQL and MariaDB servers | killexams.com real questions and Pass4sure dumps

Devart has released the latest version of dbForge Studio for MySQL and new versions of three standalone tools for MySQL and MariaDB servers.

The new release of dbForge Studio for MySQL, v. 6.1, the universal MySQL and MariaDB GUI tool for database management, administration and development, contains improvements and new features, such as support for the latest versions of MySQL and support for MariaDB.

New features include:• Database connectivity support expanded to MySQL 5.6, MySQL 5.7, MariaDB 5.5 and MariaDB 10.0• MariaDB Virtual Columns support in Data Export/Import wizards and Data/Schema Comparison tools• Microseconds support for TIME, DATETIME and TIMESTAMP data types: Data Editor, Data Export/Import wizards, Data Comparison tool• Extend support of pluggable authentication modules for MySQL servers

The full list of improvements and new features can be found at the dbForge Studio for MySQL history page.

The new releases of dbForge Schema Compare for MySQL, v3.1 and dbForge Data Compare for MySQL, v4.1 allows users to compare and synchronize database schemas and data.

New features include:• Database connectivity support expanded to MySQL 5.6, MySQL 5.7, MariaDB 5.5 and MariaDB 10.0• Support for MariaDB Virtual Columns• Microseconds support for TIME, DATETIME and TIMESTAMP data types

The new release of dbForge Query Builder for MySQL, v3.1 helps users build and execute complex queries easily.

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How to speed up your MySQL with replication to in-memory database | killexams.com real questions and Pass4sure dumps

Original article available at https://habrahabr.ru/company/mailru/blog/323870/

I’d like to share with you an article based on my talk at Tarantool Meetup (the video is in Russian, though). It’s a short story of why Mamba, one of the biggest dating websites in the world and the largest one in Russia, started using Tarantool. Why did we decide to busy ourselves with MySQL-to-Tarantool replication?

First, we had to migrate to MySQL 5.7 at some point, but this version didn’t have HandlerSocket that was being actively used on our MySQL 5.6 servers. We even contacted the Percona team — and they confirmed MySQL 5.6 is the last version to have HandlerSocket.

Second, we gave Tarantool a try and were pleased with its performance. We compared it against Memcached as a key-value store and saw the speed double from 0.6 ms to 0.3 ms on the same hardware. In relative terms, Tarantool’s twice as fast as Memcached. In absolute terms, it’s not that cool, but still impressive.

Third, we wanted to keep the whole existing architecture. There’s a MySQL master server and its slaves — we didn’t want to change anything in this structure. Can MySQL 5.6 slaves with HandlerSocket be replaced with something else without having to make significant architectural changes?

We learned that the Mail.Ru Group team has a replicator they created for their own purposes. The idea of replicating data from MySQL to Tarantool belongs to them. We asked the team to share the source code, which they did. We had to rewrite the code, though, since it worked with MySQL 5.1 and Tarantool 1.5, not 1.7. The replicator uses libslave, an open-source solution for reading events from a MySQL master server, and is built statically without any of MySQL’s system libraries. It’s been open-sourced under the BSD license, so anyone can use it for free.

Replication constraints

Firstly, binary logs residing on a master must be row-based (STATEMENT and MIXED options won’t do, only ROW). Secondly, this replicator is not a Tarantool module, but a stand-alone daemon that doesn’t have anything to do with either Tarantool or MySQL. Thirdly, if you want a single master to have, say, ten slaves, you’ll have to run ten separate daemons, because one replicator can replicate data to only one Tarantool instance at a time. Lastly, the replicator won’t work with MariaDB. We tried it with versions 5.6 and 5.7, but they’re either an Oracle or a Percona build (which is what we use). MariaDB’s replication protocol has been changed.

How does replication work?

MySQL and Tarantool know nothing about each other. The replicator reads all the MySQL binary logs and writes the data to Tarantool.

What can the replicator do?

When the replicator is run, it grabs all the data from a master, based on the configuration file that specifies which databases/tables need to be replicated. That said, it takes just a Tarantool instance with empty spaces to launch the replicator — it’s very convenient.

As a system administrator, you need to understand if the replication process is working, which binary log and which position value are being read at the moment. Of course, the replicator provides such functionality: there’s a separate Tarantool space that contains just three values, including the binary log name and the current position value — you may regard it as an analog to good old SHOW SLAVE STATUS.

10.5.2.17:5000> box.space.ReplicationLog:select() [0, ‘db-bin.024218’, 916925355]

After adopting the replicator, we deployed seven Tarantool instances running on only two servers, as a single Tarantool instance can’t use all the CPU cores of a machine at once. As a quick refresher of the Tarantool architecture, one instance is capable of using three cores or more: one core or more for network, strictly one core for transactions and strictly one core for handling write-ahead log (WAL) files.

Workload

After we ran the replicator, the workload on MySQL slaves with HandlerSocket dropped close to zero.

Then we tried to remove seven out of eight MySQL slave servers, and the remaining one was able to withstand all the workload. We didn’t fully give up MySQL slave servers — we kept them for handling those requests that work without HandlerSocket, which means we can complete the migration to MySQL 5.7. In the end, we saved at least seven servers, a number of enterprise SSDs that power them, and some rack space, electricity and money.

What about response time? We at Mamba have our own open-source product called BTP. Below are a couple of charts it generated.

HandlerSocket has a very peculiar API. You need to first call connect, then open_index and, finally, execute. The chart above shows cumulative time for the three methods, which sometimes could be as high as one second.

Compare it to what we got on Tarantool servers running the same database replicated from a MySQL master:

The reason is quite simple: MySQL was running on SSDs, and the buffer pool size was less than that of the database. Tarantool, on the other hand, is an in-memory database, so all the data is RAM-resident. We even disabled WAL files on almost all the instances, so no disk operations are involved. However, there are several non-production instances used for snapshotting, where we kept WAL files enabled.

Isn’t it reinventing the wheel?

If someone else told me about all this, I’d say, “Aren’t you reinventing the wheel? You’re replicating something from MySQL to Tarantool. Sure, you’re thinking of dropping HandlerSocket in order to migrate to MySQL 5.7. But why would you do that in the first place? If your servers without HandlerSocket can’t handle the workload, just add some more servers. If you do need an in-memory database, you can create heap tables or move database files to tmpfs, create symlinks — and all the tables will be in RAM again. Bingo!”

However, that’s not how it is.

Here’s what so special about the replicator. Suppose the database that resides on a master and that we want to replicate contains about a hundred tables, but a slave doesn’t need all these tables — it needs only seven of them. We’d hate to spend extra resources on replicating surplus data. Luckily, MySQL allows specifying the number of tables to replicate. But what if these seven tables have 120 fields in total, whereas only 21 of them are actually used in queries handled by the slave servers? MySQL forces us to entirely replicate all the seven tables, which take up about 80 GB of RAM in our case. The replicator, on the other hand, allows specifying a subset of table fields for replication, bringing the volume down to 20 GB.

What’s also great about the replicator is that all these table fields are put into one space, so you can select them with a single query, without using any joins.

Results

Tarantool is really fast, up to three times faster than MySQL, as attested by the charts above.

The resulting implementation of Tarantool replication works faster than that in MySQL, and here’s why. When we first ran it, we couldn’t help asking ourselves if our replication is consistent. We created a simple PHP script that compares the number of monthly active users as reported by a MySQL master and a Tarantool slave. Sometimes the script grabbed even the users who registered less than a second ago. A MySQL slave didn’t have those users yet, whereas the Tarantool slave did, even though executing SHOW SLAVE STATUS on the MySQL slave always showed a zero delay. That said, the information reaches Tarantool faster, since it’s an in-memory database.

Tarantool’s advantages

What happens if you unplug a MySQL server power cable, then plug it back in and restart the server? At startup, the process of InnoDB recovery is launched, which consequently restores the database. But a couple of times we’ve seen the following situation: the controller starts writing some inadequate information to disk, the server throws a kernel panic due to the controller malfunction and InnoDB recovery following the restart ends with a core dump.

Tarantool boasts a well-thought-out WAL mechanism: even if the controller does write some rubbish to a WAL file, which prevents you from relaunching Tarantool, you can simply delete this file. Or you could open it and delete records one by one until Tarantool is up and running again. As a side note, it’s possible to specify the number of transactions written to a WAL file at a time — it can even be a single transaction. I’d like to stress here that the MySQL example I used above involves a hardware (server) failure; normally, InnoDB recovery works like a charm.

What I also like about Tarantool is that it’s very user-friendly. It’s always clear what to do and how to do it. Suppose a new MySQL version is out. You install it, but it won’t launch. After checking the error log, you discover some parameters in my.cnf are deprecated. Then you open the official documentation and see a bunch of new parameters, so you have to figure out how to create a new my.cnf file to boost the performance. Tarantool doesn’t have any of this. It’s easy to use, with an absolutely necessary minimum of parameters.

Another thing we all enjoyed is the Tarantool community. There’s a Telegram chat (ping Denis Anikin for an invite), where you can ask the developers a question about Tarantool or get a quick bug fix.

Tarantool’s snapshotting implementation is excellent. This mechanism works incredibly fast — 800 MB or, probably, even 1 GB per second. Everything is written consecutively to a single file. You don’t need high-end disks for that, the cheapest SATA drives are more than enough. Starting a snapshot of a 20 GB database takes under five minutes. According to my measurements, MySQL requires much more time for that.

Tarantool’s disadvantages

First and foremost, Tarantool indexes are case-sensitive, which is really inconvenient, especially if you come from the MySQL background.

Second, working in the console isn’t that comfortable. Say, how do you know that MySQL replication is running? You execute SHOW SLAVE STATUS twice and see the numbers change. Moreover, the MySQL console will show you the output of SHOW SLAVE STATUS only once, even if you execute the command a hundred times.

The Tarantool console, on the other hand, displays a separate output each time you hit Enter. As a result, it takes a lot of time to scroll back up to a place you need.

Takeaway

Tarantool is a really good product that you can use in your projects. It does have its drawbacks, but it’s constantly evolving. Now that it has data replication from MySQL, I hope it will grow even faster. Tarantool’s killer feature is, of course, its speed.

Thank you and stay tuned!



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