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MySQL, one of the crucial approved open supply databases on earth, has just reached edition 5.6.
unlike typical releases, the fresh 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 ripen the expertise to declar accepted Availability.”
“the fresh elements and enhancements that MySQL 5.6 offers additional exhibit Oracle’s investment in using MySQL innovation, making MySQL a sparkling meet for nowadays’s most demanding net, Cloud and embedded application requirements,” stated Tomas Ulin, vice chairman of MySQL Engineering.
Highlights of MySQL 5.6:
• fresh points and enhancements in MySQL 5.6 can live 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;
• fresh 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 usurp positions within the replication circulation in case of a crash, and resume replication without administrator intervention;
• Checksums retain statistics integrity throughout the cluster with the aid of instantly detecting and alerting on errors;
• fresh instrumentation allows for clients to improved pomp screen most resource intensive queries, objects, clients and functions;
• fresh summaries with aggregated records grouped through question, thread, user, host and protest are furthermore purchasable;
• The enhancements enable for less complicated default configuration with below five percent overhead;
• MySQL 5.6 contains a few additional enhancements fancy Geographic suggestions systems - exact Spatial operations, more advantageous IPv6 compliance and optimized server defaults.
an entire listing of fastened bugs, updates and fresh elements can furthermore live found in the finished reputable changelog, encapsulated into the archive.
down load MySQL 5.6 at the flash from Softpedia.
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 trade variations as feasible options to that -- and to its flagship Oracle Database application.
these now not common with Oracle MySQL databases could learn the variations between the products difficult, specially when attempting to elect between the open supply and commercial editions. prerogative here they contemplate on the a lot of Oracle MySQL items to provide you with a stronger thought of how they evaluate to and fluctuate from one yet another, so you can greater with no mishap opt for the one it really is usurp in your company.
MySQL neighborhood Server (or neighborhood version) is what many hold into account after they suppose of MySQL. It presents the fundamental aspects you hope with a database administration system, together with the skill to create tables, views, triggers and kept strategies. It furthermore includes partitioning and replication capabilities, in addition to connectors for discrete 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 discrete commodity programs and to gain inescapable failing tolerance.
MySQL Cluster, just fancy 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 piece 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 absorb to gain totality of the application's source code available under the GPL. before distributing a edition that makes utilize of the community version or MySQL Cluster, gain confident you entirely understand the GPL phrases.industrial vs. open supply MySQL
if you can not gain an open source version work, but still wish to implement MySQL, that you would live able to select one among Oracle's three commercial items: MySQL typical version, MySQL trade version or MySQL Cluster carrier Grade edition (CGE).
The common version offers lots of the fundamentals you rep with the MySQL neighborhood edition, including language connectors, replication capabilities, and the MyISAM and InnoDB database engines. You additionally rep MySQL Workbench regular edition, which supports extra facets than MySQL Workbench community, similar to being in a position to automate database documentation.
The trade edition builds on the commonplace edition with points selected to the enterprise. as an example, you rep router services, partitioning capabilities and the NDB storage engine totality ordinary in the group version, however no longer within the regular edition. Plus, Oracle makes the MySQL Workbench trade edition implement 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 benchmark edition. as an instance, it contains equipment to monitor MySQL servers, again up facts and implement trade security, as well as equipment related to scalability and lofty availability.
Cluster CGE expands on the trade edition through proposing support for superior statistics set sizes. It furthermore 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 calamity restoration.
All three trade products, when licensed with an annual subscription, additionally proffer Oracle Premier abet at no extra can charge. Premier support provides clients with access to product updates, steer elements and, of route, technical suggestions, which you accomplish not rep with the group version.
together with the three commercial versions, Oracle furthermore presents MySQL Cloud carrier, which is built on MySQL trade edition and, based on Oracle, offers totality of the merits of that version. You furthermore rep 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 trade MySQL variants to unbiased application providers (ISVs), value-added resellers (VARs) and accustomed equipment manufacturers (OEMs) for embedding MySQL databases into their application. The embedded product offerings are comparable to the typical trade choices, except that Premier steer isn't covered. in case you need Premier aid, you need to pay added.
moreover the three industrial variations, the embedded software furthermore 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 universal version, apart from that it does not aid the InnoDB storage engine, nor does Oracle supply MySQL Workbench for this edition.
Oracle furthermore does not post the expense of embedded licenses, unlike its benchmark commercial products and cloud provider. for example, Oracle naturally lists the annual subscription costs for the benchmark 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 rep 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 furthermore elect between the three trade editions (common, enterprise and Cluster CGE), as well as the classic edition if you are embedding MySQL. Plus, you absorb the MySQL Cloud provider as an extra option.
if you arrangement to distribute your device beneath the phrases of the GPL, live confident you at the least dependence one of the open supply variants, unless you require the added elements that embrace the enterprise edition or MySQL Cloud provider. The open supply editions were commonly carried out and are supported by means of a broad person neighborhood. That referred to, gain inescapable you totally hold into account how the GPL works and the way the Oracle MySQL databases disagree from one a different earlier than making any ultimate selections on open supply vs. commercial MySQL.
starting with MySQL or Oracle is the preparatory step that most will imply if in case you absorb your eyes set on becoming a database administrator. you probably absorb any constraints that gain attending unbiased classes difficult, you could live taught SQL online. There are on-line courses for Oracle, too, that you can hold at your desired tempo and convenience. since data storage is on the coronary heart of totality agencies, there’s a unexpectedly starting to live claim for database experts in the allied domains of tips assurance and safety. rise 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 utilize large records programs to store suggestions, you are going to commonly travail as a DBA with information communication and community equipment analysts who will design, Run assessments, and investigate techniques fancy WANs (broad area networks), LANs (local enviornment networks), corporate intranets, and the cyber web.
So, prerogative here’s the way to rep the ball rolling for your profession within the domain of database administration.1. deserve a Bachelor’s diploma
Most database administrators hold a Bachelor’s degree, and you should absorb one, too — preferably in suggestions techniques, desktop science, or the administration of guidance programs (MIS), given that employers this present day elect such applicants. Your chosen bachelor’s diploma classes may still ideally consist of courses that cowl topic matters fancy 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, gain confident you are trying doing an internship that introduces you to quite a number projects, which you may should accomplish as a database administrator. With this adventure, you could possibly absorb an piece over your opponents.2. hold on-line courses
in case you don’t absorb a university degree but still aspire to start a career in database administration, you could search online associate diploma lessons provided via a couple of colleges in the container of laptop science, tips methods, and database programming. if you absorb no training or sustain in desktop science but are nevertheless drawn to the database administration landscape, that you may contemplate at various the waters with the aid of taking on ar certificates path in programming or laptop office systems.three. live trained SQL
here's a primary step in rise 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 live taught it. live it enrolling in a lecture latitude route or deciding upon a certificates in IT or programming that emphasizes SQL in specific, should you reach to a determination to study SQL online, you may absorb options galore. basically, something you gain erudition of, you're going to absorb to gain erudition of SQL anyway. So, it can pay to hub of attention on this regular query language, which is supported by using a few relational databases.
if you happen to hold SQL lessons, you're going to learn that most lessons are focused on MySQL, which is essentially the most chummy database that runs on both Linux and windows. PostgreSQL is a further prevalent SQL database that tech groups use. You can furthermore hold SQL certification exams after you absorb some abilities in the box. however, in case you intent to deserve tricky yet prestigious certifications just fancy 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 trade intelligence reports and options), you should live ready to Put the time and exertion that passing such certifications calls for.four. live taught Oracle
If Oracle is more your trend, that you may study Oracle online or in any other case in a means that could train and contemplate at various your database abilities in a large election of realm areas. which you could soak up Oracle certification classes that proffer 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 travail for corporations that want third-celebration software comparable to PeopleSoft, Oracle, and many others. So, purpose to rep mighty fundamentals in the event you settle to live taught Oracle and hold a contemplate at to rep some hands-on adventure after getting mastered the fundamentals.5. gain erudition of to differentiate Between the classes and elect for that reason
For some individuals, Microsoft SQL Server is misnamed as “SQL,” but SQL is different. basically, bethink to absorb 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 microscopic bit different in totality 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 settle which of these you are looking to learn. on account that many classes that facilitate you to live trained online can live found at the present time, you simply deserve to accomplish some homework to check which of them would abet your career probably the most and are the correct hardy 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 travail as a DBA.
Many specialists who travail today as DBAs as soon as started their careers as records analysts and database developers — and you, too, can commemorate in their footsteps after earning your Bachelor’s diploma. whereas the job of an information analyst would gain 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 live inserted into databases), design and execute database applied sciences, and determine the efficiency of databases. to face out of the competition, live confident to furthermore travail against earning industry certifications. some thing route you reach to a determination to take, live inescapable to absorb a clear theory of what you want to accomplish and where you want your profession to move. figuring out this will assist you're making sapient decisions.
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Apr 18, 2012
Oracle plans to hold a MySQL conference on September 29 and 30, just prior to Oracle OpenWorld 2012, which will live held in San Francisco from September 30 to October 4. The event called MySQL Connect is planned to provide an opening to learn about the latest MySQL features, discuss product roadmaps, and connect directly with the engineers behind the latest MySQL code.
MySQL Connect will embrace six tracks: Performance and Scalability, lofty 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 final year on ways to enrich the MySQL Community. To absorb their 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 summon 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 fresh development Milestone Release (DMR) for MySQL 5.6. Available for download in the MySQL Developer Zone, the MySQL 5.6 DMR provides fresh replication features enhancing availability with self-healing recovery, increased performance, and improved manageability.
Oracle is furthermore providing early access to features under development for community testing and feedback through http://labs.mysql.com. The features under development embrace online operations for ADD index and NoSQL access to InnoDB via the Memcached protocol.
Devart has released the latest version of dbForge Studio for MySQL and fresh versions of three standalone tools for MySQL and MariaDB servers.
The fresh release of dbForge Studio for MySQL, v. 6.1, the universal MySQL and MariaDB GUI implement for database management, administration and development, contains improvements and fresh 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 plenary list of improvements and fresh features can live found at the dbForge Studio for MySQL history page.
The fresh 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 fresh release of dbForge Query Builder for MySQL, v3.1 helps users build and execute knotty queries easily.
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 wizard• Microseconds support for TIME, DATETIME and TIMESTAMP data types: Data Editor, Data Export wizard• Extended support of pluggable authentication modules for MySQL servers
Original article available at https://habrahabr.ru/company/mailru/blog/323870/
I’d fancy 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 they settle to busy ourselves with MySQL-to-Tarantool replication?
First, they had to migrate to MySQL 5.7 at some point, but this version didn’t absorb HandlerSocket that was being actively used on their MySQL 5.6 servers. They even contacted the Percona team — and they confirmed MySQL 5.6 is the final version to absorb HandlerSocket.
Second, they gave Tarantool a try and were pleased with its performance. They compared it against Memcached as a key-value store and saw the accelerate double from 0.6 ms to 0.3 ms on the selfsame hardware. In relative terms, Tarantool’s twice as speedy as Memcached. In absolute terms, it’s not that cool, but still impressive.
Third, they wanted to retain the gross 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 live replaced with something else without having to gain significant architectural changes?
We learned that the Mail.Ru Group team has a replicator they created for their own purposes. The thought of replicating data from MySQL to Tarantool belongs to them. They asked the team to share the source code, which they did. They 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 utilize it for free.Replication constraints
Firstly, binary logs residing on a master must live 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 absorb anything to accomplish with either Tarantool or MySQL. Thirdly, if you want a lone master to have, say, ten slaves, you’ll absorb to Run ten separate daemons, because one replicator can replicate data to only one Tarantool instance at a time. Lastly, the replicator won’t travail with MariaDB. They tried it with versions 5.6 and 5.7, but they’re either an Oracle or a Percona build (which is what they use). MariaDB’s replication protocol has been changed.How does replication work?
MySQL and Tarantool know nothing about each other. The replicator reads totality the MySQL binary logs and writes the data to Tarantool.What can the replicator do?
When the replicator is run, it grabs totality the data from a master, based on the configuration file that specifies which databases/tables need to live replicated. That said, it takes just a Tarantool instance with vacuous 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 appellation and the current position value — you may esteem it as an analog to agreeable used pomp SLAVE STATUS.10.5.2.17:5000> box.space.ReplicationLog:select() [0, ‘db-bin.024218’, 916925355]
After adopting the replicator, they deployed seven Tarantool instances running on only two servers, as a lone Tarantool instance can’t utilize totality 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 they ran the replicator, the workload on MySQL slaves with HandlerSocket dropped near to zero.
Then they tried to remove seven out of eight MySQL slave servers, and the remaining one was able to withstand totality the workload. They didn’t fully give up MySQL slave servers — we kept them for handling those requests that travail without HandlerSocket, which means they can complete the migration to MySQL 5.7. In the end, they saved at least seven servers, a number of enterprise SSDs that power them, and some rack space, electricity and money.
What about response time? They at Mamba absorb their own open-source product called BTP. Below are a couple of charts it generated.
HandlerSocket has a very peculiar API. You need to first summon connect, then open_index and, finally, execute. The chart above shows cumulative time for the three methods, which sometimes could live as lofty as one second.
Compare it to what they got on Tarantool servers running the selfsame 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 totality the data is RAM-resident. They even disabled WAL files on almost totality the instances, so no disk operations are involved. However, there are several non-production instances used for snapshotting, where they kept WAL files enabled.Isn’t it reinventing the wheel?
If someone else told me about totality 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 accomplish that in the first place? If your servers without HandlerSocket can’t wield the workload, just add some more servers. If you accomplish need an in-memory database, you can create pile tables or hobble database files to tmpfs, create symlinks — and totality the tables will live 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 they want to replicate contains about a hundred tables, but a slave doesn’t need totality these tables — it needs only seven of them. We’d disapprove to expend extra resources on replicating surplus data. Luckily, MySQL allows specifying the number of tables to replicate. But what if these seven tables absorb 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 totality the seven tables, which hold up about 80 GB of RAM in their 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 furthermore remarkable about the replicator is that totality these table fields are Put into one space, so you can select them with a lone 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 they first ran it, they couldn’t abet asking ourselves if their replication is consistent. They created a simple PHP script that compares the number of monthly vigorous 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 absorb those users yet, whereas the Tarantool slave did, even though executing pomp 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 practicable to specify the number of transactions written to a WAL file at a time — it can even live a lone transaction. I’d fancy to stress here that the MySQL case I used above involves a hardware (server) failure; normally, InnoDB recovery works fancy a charm.
What I furthermore fancy about Tarantool is that it’s very user-friendly. It’s always clear what to accomplish and how to accomplish it. Suppose a fresh MySQL version is out. You install it, but it won’t launch. After checking the oversight log, you learn some parameters in my.cnf are deprecated. Then you open the official documentation and see a bunch of fresh parameters, so you absorb to design out how to create a fresh my.cnf file to boost the performance. Tarantool doesn’t absorb any of this. It’s smooth to use, with an absolutely necessary minimum of parameters.
Another thing they totality enjoyed is the Tarantool community. There’s a Telegram chat (ping Denis Anikin for an invite), where you can question the developers a question about Tarantool or rep 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 lone 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 reach from the MySQL background.
Second, working in the console isn’t that comfortable. Say, how accomplish you know that MySQL replication is running? You execute pomp SLAVE STATUS twice and see the numbers change. Moreover, the MySQL console will pomp you the output of pomp 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 status you need.Takeaway
Tarantool is a really agreeable product that you can utilize in your projects. It does absorb 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 abide tuned!
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