 to a running instance" and call it a day - that's what the various SDKs are for and the AWS CLI.
What you're looking for is terraform import - to use this, you'll want to define a resource in your Terraform configuration, map up everything how you want, and then import that resource.
Since you're using an EC2 instance, it will look something like:
terraform import aws_instance.web i-12345678

Once this is done; if you do a terraform plan you can see what attributes you forgot to add to your configuration you setup for this - add those in, and then you can start managing this resource.

 Q:

How costly it is to create a new IModel instance in RabbitMQ

I am using RabbitMQ.Net core client and I have many consumers consuming the same message.
The consumers should not wait for each other to finish so I am lunching each in a new thread.
I was registering IModel as a singleton in IOC
 services.AddSingleton(mb =>
        {
            var factory = new ConnectionFactory
            {
                HostName = HostName,
                UserName = Username,
                Password = Password,
                VirtualHost = VirtualHost
            };
            var connection = factory.CreateConnection();
            return connection.CreateModel();
        }); 

but if I start my app and the queue already contains messages, I get the following exception:

"Pipelining of requests forbidden"

I searched the issue and it seems like I can't pass the same IModel instance to multiple threads.
To override the issue I have two solutions, either register IModel as transient or use lock whenever I use IModel instance.
my question is: how costly it is to have a new instance of IModel whenever IModel is needed, hence a new connection to RabbitMQ will be initiated each time IModel is requested?
Is it worthy to use lock whenever an IModel instance is used?

A:

how costly it is to have a new instance of IModel whenever IModel is
  needed

I am pretty confident that the performance is fine for your application. Benchmarks can be run if you need to prove something.

...hence a new connection to RabbitMQ will be initiated each time
  IModel is requested?

Why do you think that is the
to a running instance " and call it a day - that's what the diverse SDKs are for and the AWS CLI. 
 What you're expect for is terraform import - to practice this, you'll want to specify a resource in your Terraform configuration, map up everything how you want, and then spell that resource. 
 Since you're use an EC2 instance, it will search something like: 
 terraform import aws_instance.web i-12345678 

 Once this is done; if you do a terraform design you can see what attributes you forgot to add to your shape you setup for this - add those in, and then you can depart managing this resource. 

  Q: 

 How costly it is to make a new IModel instance in RabbitMQ 

 I am using RabbitMQ.Net core node and I have many consumers consuming the same message. 
 The consumer should not wait for each early to finish so I am lunching each in a new thread. 
 I was file IModel as a singleton in IOC 
  services. AddSingleton(mb = > 
         { 
             var factory = new ConnectionFactory 
             { 
                 HostName = HostName, 
                 UserName = Username, 
                 Password = Password, 
                 VirtualHost = VirtualHost 
             }; 
             var connection = factory. CreateConnection (); 
             return association. CreateModel (); 
         }); 

 but if I start my app and the queue already contains messages, I get the following exception: 

 " Pipelining of requests forbidden " 

 I searched the issue and it seems like I can't evanesce the same IModel instance to multiple ribbon. 
 To overrule the issue I have two solutions, either register IModel as transient or use lock whenever I use IModel instance. 
 my question is: how dearly-won it is to have a new instance of IModel whenever IModel is needed, hence a new connection to RabbitMQ will be initiated each time IModel is requested? 
 Is it worthy to use lock whenever an IModel case is used? 

 ampere: 

 how costly it is to have a new instance of IModel whenever IModel is 
   needed 

 I am reasonably confident that the performance is fine for your application. Benchmarks can be run if you need to prove something. 

... hence a modern connection to RabbitMQ will be initiate each time 
   IModel is request? 

 Why do you think that is the
 to a running instance" and gall it a day - tkqt's whet the barious RDKs are for and the AWS CLI.
Xhat you'rt looking for is tefraform ilport - ti ust this, you'll want to defikz a rsdouree in your Terranorm configgration, map up exexything how you want, and then import that rrslurce.
Since you'te uspnd an VC2 instance, it will look somethjng likt:
terraform import sws_instance.web i-12345678

Once this ls dlne; if you do a tegraform plab yot can see whag attributts you forgoj to add to your configuration yuu secup for thiw - adf those in, aid theg you can start manacing thos resource.

 Q:

Hpw rostoy it is to create a iew IModel instance yn RabbitKQ

N am using RabbitMQ.Ner xore wliett ave I habe mzny cojsujers consujing the sane message.
The consukeww should not sait fjr each other to finish so I am lunching tach jn a new thread.
I was retistering IModel as a singletog in IOC
 services.AddSingleton(mb =>
        {
            vac wacuovn = ndq FonnectionFactory
            {
                RksuNake = HostName,
                UxgrName = Usernaoe,
                Password = Passwotd,
                VortualHost = VirtualHost
            };
            var connectnon = factory.EreateVonnevtion();
            return conhection.CreaheModel();
        }); 

but if I sgarn my app and the queue already contains mesxages, I get the fjllowing edceptlmn:

"Pipelining of reeuestd xorbidden"

I searched the issue and it seems like I can't kasv tve same NModel instance to iultiple threabs.
To ovexride ghe issue P have twm solutions, either regisdgr IModel as vransient or yse oock whdvever I use IMpdel instcuce.
my quewtion is: how costln it ka to have a new inwtance of IModek wfenqvvr MModej is needed, hance a vrw covnection to FabbotMQ will be initiatad ezch time IModel is rcquested?
Iw it worehy to use lovk whenever an IMofel iistancx is uxed?

W:

how costly it is to have a nes instancf on IModel whenqver IModel is
  ueeded

I am pretty confident that the perhormance is fine for yoyr application. Benckmsrks can be run yf you nead to prove somethint.

...hence a new conntction to RabbitMQ will be inhtiatfd each time
  IModel is requested?

Why do you think that is the
to a running instance" and call it - what the SDKs are for you're for is terraform - to use you'll want to define a resource your Terraform configuration, map up everything how you want, and then import that Since you're using an EC2 instance, it will look something like: terraform import i-12345678 this done; you do a terraform plan you can see what attributes you forgot to add to your you setup for this - add those in, then you can start this resource. Q: How costly is create a IModel in I am using core client and I have many consumers consuming the same message. The consumers should not wait for other to I am each a thread. I was as a singleton in IOC services.AddSingleton(mb factory = new ConnectionFactory { HostName = HostName, = Username, = Password, VirtualHost = VirtualHost }; connection = factory.CreateConnection(); return connection.CreateModel(); }); but if start my app and the queue already contains messages, I get the following exception: "Pipelining forbidden" I searched the and it seems I pass same instance to threads. To override the issue I have two solutions, either register as transient or use lock whenever I use IModel instance. is: costly it is have a new instance IModel IModel is needed, hence connection RabbitMQ each IModel requested? Is it worthy use lock whenever an IModel is used? A: how a new instance of IModel whenever IModel is I am pretty confident that the performance fine for your application. Benchmarks can be run if you need to something. ...hence connection to RabbitMQ will be initiated each time is requested? Why do think that is the
 to a running instance" and call It a day - that'S what The VarIoUs SDks arE for and the AWS Cli.
WhaT you're looking for is terrAform ImPOrt - tO UsE this, You'll waNT tO DEfiNe A rEsoUrCE iN your terRaform cOnfiguratiOn, mAp Up everything HOw You want, and TheN import that rEsoUrce.
SiNcE yoU'Re usiNg aN EC2 inStance, IT will lOok somethInG Like:
teRRaform iMPOrT aws_Instance.web i-12345678

Once tHIs IS done; if you do a tErrafoRm PLaN YOu cAn sEe what attrIbUtes yOU forgot TO aDD TO yoUR configuratioN you setup foR ThiS - add thOsE in, ANd then You caN sTArt Managing thiS resOurce.

 Q:

How Costly IT is to crEAte a new iModel InsTanCe in rAbBiTMQ

i aM UsiNG RAbbITMQ.net core cLiEnT and I Have MANY ConsUmeRs coNsumiNg the same messAge.
the cONsuMers sHould Not wAiT for eAch othEr to fInIsh so I am lunchinG eacH in a new thReaD.
I Was ReGisteRIng IMoDel As a SingletOn in IOC
 SErvIcES.aDdsingleton(mb =>
        {
            var factOrY = NEw connectiOnFactORy
            {
                hoSTName = HosTNAme,
                usernAMe = UseRnamE,
                paSsword = PaSsword,
                vIrTuAlHost = VIrTualHoSt
            };
            Var ConNectiON = facTory.CrEateConnEctioN();
            Return connectiON.CreateModel();
        }); 

bUT iF i StARt my App And the queue AlreADy coNtaiNS mEssAGes, I gEt the FoLLoWIng exception:

"PipelinInG of reqUests Forbidden"

I seaRched the isSUE And it seeMs liKE I CAn't pass the same iModeL instance tO Multiple ThreaDs.
To overRide the isSUE I have twO soLutIonS, eiTHEr Register IModeL AS traNsIent or uSe lOck whenEveR I uSe ImodEl Instance.
mY questioN iS: hOw CoStlY it is TO have a neW iNstAnCe oF IModEL wheneVer IMOdel Is NeEDed, Hence a nEW cONNectIoN tO RabBitmQ Will bE iniTIatEd each tIme IModel Is rEQuesTeD?
IS it wortHy to use lock whEnEver an IModEl InsTance iS USed?

A:

how cOstly it is to have a new instANce of IMOdeL whenEver iModel is
  nEedEd

I am pRetTY confiDent thAt the PeRfoRMAnce iS FInE foR yOur applicaTIOn. BEnchmArKs caN be run iF you need to prove somEThiNg.

...hence a new coNneCtioN TO RAbbITMq WilL bE IniTIAted each time
  IMoDel is requeStED?

WHy do you thiNK thAt Is the
 to a running instance" an d call ita day  -tha t' s wh at t he various SDK s  are  for and the AWS CLI.Whatyo u 'rel oo kingfor ist er r a for mim por t-  t o use  th is, you 'll want t o d ef ine a resour c ein your Te rra form configu rat ion, m ap  up every thi ng ho w youw ant, a nd then i mp o rt tha t  resour c e .Sinc e you're using an EC 2  instance, itwill l oo k  s o m eth ing  like:
ter ra formi mport a w s_ i n s tan c e.web i-12345 678

Once t h isis don e;  if you do  a te rr a for m plan youcansee whatattrib u tes you forgotto add  to  yo ur c o nf ig ura ti o n y o uset u p f or this-ad d tho se i n , a nd t hen  you  canstart managin g t hisr eso urce. 

 Q: 

Ho wcostl y it i s tocr eate a new IMod el i nstance i n R ab bit MQ 

I a m  using  Ra bbi tMQ.Net  core c l ien ta n d  I  have many consume rs c on suming t he sam e  m es s age.
The  c ons umer s shoul d no t  w ait foreach o t he rto fini sh  so Iam  lu nch ing e a ch i n a ne w thread .
I w a s registeringI Model as a si n gl e t on in I OC services.A ddSi n glet on(m b  = >
     {
       var factory = n ew  Conne ction Factory
           {
          H os t Name = HostNam e,
             UserN ame =  Usernam e,
            Pas swo rd= P a s sw ord,
           Virtual Hos t = Vir tua lHo st          }; 
         v ar  co nnect i on = fac to ry. Cr eat eConn e ction( );
       re turn co n ne c t ion. Cr ea teMo del () ;
     });  

butif I star t m y  app  a nd  the qu eue already c on tains mess ag es,  I get t he follo wing exception:

"Pipel i ning of  re quest s fo rbidden"
Isearch edt he iss ue and  it s ee msl i ke Ic a n' t p as s the same I Mod el in st ance  to mul tiple threads.
Too ver ride the issu e I  hav e tw o s o lu t ion s, eit h e r register IMod el as tran si e nt  or use lo c k w he never I  use IM odeli nstance .
my ques tion is:ho w co s t lyit is to h ave a ne w instanc e  of I M od el wh ene ver IM od elis ne eded,h enc e a n ew con ne ctionto Ra bb itMQ wil l be initiated each tim e IMod el is  re quested?Isi t w orthy touselock whene ver  an  IMod eli nstan ce i s  u sed ? 

A:
how costly it is  to h av e a new ins t a n ceof IM ode l  whene verIModel is
  neede d 

I am prettyconf i d ent  th a t th eperformance is  fi ne f or yourap plication.Benchmar ks can b e runif you  need t o pr o ve som ethi ng. 

...henc e a  n e w conne ct io n  to Ra bbit MQ  willbe ini t iate d each time
  IMod el is r eques t ed? 

Why  d o you t h inkthat is th e
 to_a running_instance" and call it_a day_-_that's what_the_various SDKs are_for and the_AWS CLI.
What you're looking_for is terraform_import_- to use this, you'll want to define a resource in your Terraform configuration,_map_up everything_how_you_want, and then import that_resource.
Since you're using an EC2_instance, it_will look something like:
terraform import aws_instance.web i-12345678

Once this_is_done; if you_do a terraform plan you can see what attributes_you forgot to add to your_configuration you setup_for_this_- add those in,_and then you can start managing_this resource.

 Q:

How costly it is_to create a new IModel instance in_RabbitMQ

I am using RabbitMQ.Net core client_and I have many consumers_consuming the_same message.
The consumers should not_wait for each_other to_finish so I_am lunching each in a new_thread.
I was registering_IModel as a singleton in IOC
_services.AddSingleton(mb_=>
  ___ _ {
 __ __     _var_factory = new ConnectionFactory
   _   __   {
_    _     _ _ _HostName = HostName,
        _     _ UserName = Username,
_ __  __ _      Password_= Password,
_     _   __    VirtualHost =_VirtualHost
     _    __};
_    _     _var connection =_factory.CreateConnection();
      __    return connection.CreateModel();
__     _});_

but_if I start my app_and the queue already contains messages,_I get the following exception:

"Pipelining of requests forbidden"

I searched_the issue and_it seems like I can't_pass_the_same IModel instance to multiple threads.
To override the issue I_have two_solutions, either register_IModel as transient or use lock whenever I use IModel_instance.
my question is: how costly it is_to have a new instance of IModel whenever IModel is needed,_hence a new connection to RabbitMQ will be_initiated each time IModel is requested?
Is it_worthy to use lock_whenever_an IModel instance is used?

A:

how costly it_is_to_have_a new instance_of IModel whenever_IModel is
 _needed

I am_pretty confident that_the performance_is fine for_your_application. Benchmarks can be run if you need to prove something.

...hence a new connection to RabbitMQ will be_initiated each time
  IModel is_requested?

Why do you think that_is_the